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SOG SlimJim Folding Pocket Knife- SOG Assisted Technology w/ Tactile Bumps and Cutout Aid, Reversible Carry Clip, AUS-8 Stainless Steel Body (SJ31-CP), One Size, Hardcase Black

4.1 4.1 out of 5 stars 861 ratings
$44.65
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Purchase options and add-ons

Recommended Uses For Product Hunting, Fishing, Camping
Brand SOG
Model Name 997126
Special Feature Water-Resistant
Age Range (Description) 18+ yrs
Handle Material 420 Stainless Steel
Color Hardcase Black
Blade Material Stainless Steel
Style Slim Jim Lockback
Blade Length 2 Inches

About this item

  • SLIMMEST ASSISTED OPENING KNIFE ON EARTH: The SlimJim compact knife is a super-thin clip pocket knife, backpacking knife and camping knife; measures 4.22 inches closed and .25 inches thick (without removable clip); model number: SJ31-CP
  • 3.18 INCH AUS-8 MINI KNIFE: An industrial knife tool with surprises; a formidable small EDC knife, fishing knife, shipping knife and survival knife, if push comes to shove; carries easy at 2.4 ounces
  • EVERYDAY CARRY KNIFE W/ LOCKBACK: This lightweight every day pocket knife includes SOG Assisted Tech (S.A.T.); these utility knives and rescue knives open one-handed, Lockback secures the blade
  • 420 STAINLESS STEEL KNIFE HANDLE: SOG outdoor survival knives, camping knives and hunting knives are of the highest quality; even the SlimJim handle is stainless steel
  • SOG CARE: SOG knives and tools are built to last but may require initial tuning adjustments along with regular cleaning, lubrication and sharpening; we consider all repair and replacement requests
› See more product details

Customer ratings by feature

Light weight
4.4 4.4
Sturdiness
3.7 3.7
Value for money
3.3 3.3
See all reviews
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SOG SlimJim Folding Pocket Knife- SOG Assisted Technology w/ Tactile Bumps and Cutout Aid, Reversible Carry Clip, AUS-8 Stain
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SOG Specialty Knives Countertop Knife Sharpener, one size (SH-02)
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From the manufacturer


SAFETY FIRST: A Lockback keeps the blade open, and a reversible clip puts it in easy reach of either hand.

Field Notes:

"The SlimJim is one scary everyday carry."

Best features:

  • Ultra-compact assisted open
  • Super lightweight design
  • Stainless steel inside and out

A Knife About Two Quarters Thick

Easy Carry + Deploys Quick

Trust the SOG SlimJim assisted opening knife to give you the edge when an edge is all you have room to carry. SOG, based in Seattle, WA, created this knife to be the slimmest assisted opening knife – and it is.

  • “CALL ME SLIM”: The slimmest assisted folding knife in the world houses a .08” thick clip-point blade in a .25” handle at its widest point
  • STAINLESS STEEL X 2: The SlimJim’s satin-polish AUS-8 stainless steel blade is housed in a bead-blasted 420 stainless steel handle
  • UPGRADED S.A.T. TECH: SOG’s Assisted Technology was reengineered and improved to propel its most streamlined blade
  • 2 SAFETY LOCKS: The Lockback and slide lock keep the blade open or closed, while extra jimping and handle ridges improve grip
  • SOG COMMITMENT: Take care of your knives and we’ll take care of you; SOG tools are built to last, and we’re committed to making sure they do

BORN + BASED IN THE USA

SOG STRONG. SOG, short for MACV-SOG, is a U.S. tool and knife company founded in 1986 and named in honor of the Military Assistance Command, Vietnam - Studies and Observations Group, a spec ops outfit that valued quick, quiet solutions.

SOG SUPPORT. Our knives and tools are built to last, and we always stand ready to assist you when needed.

U.S. DESIGN + QUALITY CONTROL

SOG STEEL. Your SOG SlimJim folding knife is crafted in AUS-8 stainless steel with a 420 stainless steel handle for added durability and all-around protection.

SOG STRAIGHT EDGE. The SlimJim clip point features a tried and true blade design that more finely centers the tip position better balance and sharper piercing cuts.

CONTENTS

  • SOG SlimJim Assisted Opening Knife (SJ31-CP)
spring assisted knife pocket tactical tac folding sog small utility survival open mini cutter blade
SlimJim (SJ31-CP) SlimJim (SJ32-CP) SlimJim (SJ33-CP) SlimJim XL (SJ52-CP)
See Details
See Details
Customer Reviews
4.1 out of 5 stars
861
3.9 out of 5 stars
449
4.1 out of 5 stars
172
4.2 out of 5 stars
487
Price $44.65 $46.54 — —
Blade Length 3.18” 3.18” 3.18” 4.18"
Closed Length 4.22” 4.22” 4.22” 5.18"
Weight 2.4 oz. 2.4 oz. 2.4 oz. 2.7 oz.
Steel Type AUS-8 AUS-8 AUS-8 AUS-8
Handle Type 420 Stainless Steel 420 Stainless Steel 420 Stainless Steel 420 Stainless Steel
Blade Shape Clip Point Clip Point Tanto Clip Point
Finish Satin Polished Hardcased Black TiNi Satin Polished Hardcased Black TiNi
Assisted Opening Yes Yes Yes Yes

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Product Warranty: For warranty information about this product, please click here. [PDF ]

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SOG SlimJim Folding Pocket Knife- SOG Assisted Technology w/ Tactile Bumps and Cutout Aid, Reversible Carry Clip, AUS-8 Stainless Steel Body (SJ31-CP), One Size, Hardcase Black

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Product Description

People say the SlimJim is so light and compact they forget it’s in their pocket … that is, until they need it. And, when they do, a quick flick of the thumb and the world’s slimmest assisted folding knife plays into action. That’s thanks to SOG Assisted Technology (S.A.T.), a system of opposing high-tension coils that propels the blade open instantly once you give it a flick.

Top Brand: SOG

Highly Rated
100K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
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Important information

Legal Disclaimer

This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Customer reviews

4.1 out of 5 stars
4.1 out of 5
861 global ratings

Customers say

Customers like the appearance and sharpness of the knife. They say it's sleek, easy to carry, and sharp enough for wire work. They also like the weight and thickness. However, some customers have reported issues with the ease of opening, saying that the safety is stiff and the opening mechanism is not strong. Opinions are mixed on performance, quality, and ease of use.

AI-generated from the text of customer reviews

87 customers mention87 positive0 negative

Customers find the weight of the knife to be light, and say it's easy to carry. They also appreciate the slim profile and the fact that it tucks in their pocket perfectly.

"...It tucks away in a pocket without notice. It is light enough you won't think it's there, but feels weighty and strong in the hand...." Read more

"Can’t say enough about this knife. Absolutely love it. Sleek and easy to carry" Read more

"...This is a great everyday knife--it's small and slim enough that I forget it's in my pocket, which means I'm not tempted to leave it at home...." Read more

"...I literally forget that it's in my pocket. Super thin and super slim...." Read more

69 customers mention61 positive8 negative

Customers like the sharpness of the tool. They say it's razor sharp out of the box, and is suitable for wire work. Some customers also mention that the blade comes with a good edge.

"I love this knife. It was very sharp upon arrival, and I have since sharpened it to a razor...." Read more

"...A little smaller - more practical as an unobtrusive pocket knife and super sharp. Even the blade lock has a lock! This is the ultimate minimal knife." Read more

"...The knife is very thin and therefore, so is the blade. The blade is exceptionally sharp...." Read more

"...The lockback and assisted opening work great. The blade is also crazy sharp on this thing so b careful...." Read more

54 customers mention42 positive12 negative

Customers like the thickness of the tool. They mention it's super thin and slim, and that they wouldn't want to be cut by the blade.

"Perfect carry knife. I literally forget that it's in my pocket. Super thin and super slim...." Read more

"...The packaging lured me in. The knife is very thin and therefore, so is the blade. The blade is exceptionally sharp...." Read more

"...However it's a good thin but sturdy blade. No slop in it whatsoever. The lockback and assisted opening work great...." Read more

"...This is an awesome knife to carry around every day. It is extremely thin so you can pocket clip it with just about any kind of pants/shorts..." Read more

51 customers mention40 positive11 negative

Customers like the appearance of the knife. They say it looks good, nice, and thin. Some customers also say the clips are the best designed on the market. Overall, most are satisfied with the appearance and performance of the tool.

"Can’t say enough about this knife. Absolutely love it. Sleek and easy to carry" Read more

"its a good looking knife and its very sharp and light weight, however the blade deployment is very poor...." Read more

"...The AUS-8 steel should hold an edge well long term and stay shiny (unless you open salt bags with it)...." Read more

"...Truly a gentleman's carry. This beautiful and very sharp blade is amazing, once you start carring a sharp blade with you, you'll wonder how you ever..." Read more

159 customers mention89 positive70 negative

Customers are mixed about the quality of the knife. Some mention it's well-made and sharp right out of the box, while others say that the blade lock is very flimsy and the blade feels loose when open and locked. The pivot, lockback, and sliding safety feel rough and don't stay engaged.

"...It holds an edge very well, and is responsive to quick touch-ups on the blade.I was initially peeved by the opening mechanism...." Read more

"...Admittedly, the lock is a bit tricky if you're not used to it, but after a day or so of fiddling with it, I had it down pretty well...." Read more

"...A little smaller - more practical as an unobtrusive pocket knife and super sharp. Even the blade lock has a lock! This is the ultimate minimal knife." Read more

"...This is a great everyday knife--it's small and slim enough that I forget it's in my pocket, which means I'm not tempted to leave it at home...." Read more

36 customers mention14 positive22 negative

Customers are mixed about the performance of the knife. Some mention that the action works very well, while others say that it does not function properly the majority of the time. The safety pin is unreliable and inconsistent in its function. Overall, the opinions are mixed and the knife is a mixed bag for customers.

"...None of my other knives have this issue either. It's near useless. That's a shame because I'd really like it of it was functional...." Read more

"...Gun cleaner and lubricants work well. I have never had a knife open so buttery smooth, so consistently, with such a small amount of effort...." Read more

"...Knife is great! Polishing on the tension mechanism is poor. Needs to be worked. After about 1K openings, it starts to work as it should...." Read more

"...open takes practice to get right, but once you have it down, it works fine...." Read more

29 customers mention10 positive19 negative

Customers are mixed about the ease of use of the knife. Some mention it is small, thin, and very simple to use, with no flick or user assistance required. However, others say that it is fairly difficult to deploy the blade, too cumbersome to use and that it opens with one hand.

"...The stiff opening action also makes it a bit difficult to use when your hands are wet, which is a drag if you have to work in the rain or you're..." Read more

"...on the thumb knob and it locks open immediately, no flick or user assistance is required...." Read more

"...The blade also tends to stick in the handle. Became too cumbersome to use." Read more

"...knife and its very sharp and light weight, however the blade deployment is very poor. it opens and then bounces back and can potentially hurt you...." Read more

106 customers mention31 positive75 negative

Customers find the knife difficult to open. They say the opening mechanism is not strong, it comes open on its own, and the assisted opening only assists part way. Customers also mention the opening and closing are subpar.

"...piece, so I was concerned by the reviews saying that the assisted opening didn't work well, or that it was difficult to hold/use...." Read more

"It is very hard to open, and I CUT MYSELF DOING IT; CLOSING IT WAS ALSO DIFFICULT WITHOUT CUTTING myself. IT IS A TERRIBLE DESIGN." Read more

"...Gun cleaner and lubricants work well. I have never had a knife open so buttery smooth, so consistently, with such a small amount of effort...." Read more

"I like the form and edge on this knife but it takes two hands to open and close...." Read more

Excellent EDC Knife, needs a tad more refinement to internals
4 Stars
Excellent EDC Knife, needs a tad more refinement to internals
Overall this is an excellent EDC Knife. The 3.2 inch blade may be a bit long for an EDC, but folded this knife is so compact and thin. I can even clip it to the waistband of my althletic pants and not even feel it's there.I was torn between this an the Twitch II (which I will probably get too) but this has exceeded my expectations overall. The clip point blade looks a bit more menacing than a drop point. However it's a good thin but sturdy blade. No slop in it whatsoever. The lockback and assisted opening work great. The blade is also crazy sharp on this thing so b careful. We'll see over time how long it can hold and edge before sharpening.The lock slider both locks the blade closed and open.Only ding against this is that, out-of-the-box feel is a bit lacking. You can feel that the the internals--pivot, lockback, and sliding safety feel a bit rough, like they could have been ground and polished better. I spent some time breaking it in. Additionally, a applied some light gun oil to the internals which helped the opening/closing, safety, and assisted opening quite a bit.Flicking it open now works near flawlessly, and closing with one hand takes a bit of practice. I found that putting my pinky against the belt clip helps get the leverage to flick it open easily.Overall I'd say this is a great EDC knife. If the factory would smooth and polish the internals more I'd give it 5 stars, but a little break-in time and gun oil lube helped smooth it out. It's a good deal, I'd recommend this.
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Top reviews from the United States

Justin
5.0 out of 5 stars Excellent knife
Reviewed in the United States on September 30, 2016
Verified Purchase
I love this knife. It was very sharp upon arrival, and I have since sharpened it to a razor. It holds an edge very well, and is responsive to quick touch-ups on the blade.

I was initially peeved by the opening mechanism. It can be difficult to see the blade open fully with the assisted action; it tends to get stuck halfway. Not only is this frustrating, it's a safety concern.

Fret not. Be careful to use (or purchase if you have none) a cleaning solution and an oil/lubricant. Gun cleaner and lubricants work well. I have never had a knife open so buttery smooth, so consistently, with such a small amount of effort. You merely press on the thumb knob and it locks open immediately, no flick or user assistance is required. I can open it so quickly after taking it out of my pocket that people ask if it's a switch.

I believe the un-lubricated difficulty opening has to do with the tolerances within this knife. It is CRAZY thin and short for a 3+ inch blade, and it has zero wobble or flex. It tucks away in a pocket without notice. It is light enough you won't think it's there, but feels weighty and strong in the hand. It is in fact very strong, I use this as a daily carry knife and it gets used in all forums. I drop it, get food on it, sit on it or what have you on a regular basis. Not a nick, no bending, no corrosion.

I could see the Twitch 2 by SOG being a better knife overall. Handle thickness is highly prohibitive to me; if my knife is too thick I always find an excuse to leave it at home. So I prefer this one. Consider both of them before you buy.
7 people found this helpful
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Mark Newell PhD
5.0 out of 5 stars Brilliant product
Reviewed in the United States on April 23, 2024
Verified Purchase
My first SOG was purchased decades ago - a great knife - but this new SOG is a much better update. A little smaller - more practical as an unobtrusive pocket knife and super sharp. Even the blade lock has a lock! This is the ultimate minimal knife.
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Dollie Simpson
5.0 out of 5 stars Awesome Pocket Knife
Reviewed in the United States on February 12, 2024
Verified Purchase
Can’t say enough about this knife. Absolutely love it. Sleek and easy to carry
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Movie Guy
4.0 out of 5 stars Great lightweight knife with some limitations
Reviewed in the United States on July 5, 2017
Verified Purchase
I held back from purchasing this knife for a while because of the mixed reviews. I was looking for a good little work knife, not a novelty piece, so I was concerned by the reviews saying that the assisted opening didn't work well, or that it was difficult to hold/use.

The assisted open takes practice to get right, but once you have it down, it works fine. At first, I had the same problem as other reviewers with the knife only flipping out half way. I figured out that I had to use the clip on the side to give me enough leverage to press the thumb stud. After opening and closing the knife a hundred times or so, it's gotten pretty smooth. It still takes a little more force to open than what I'd call ideal, but it's very useable as an everyday work knife.

I also loosened the blade hinge about a quarter turn, which seemed to take out a little bit of the "tightness".

Craftsmanship wise, I have no complaints. Fit and finish are good, and the handle is surprisingly comfortable in spite of how thin it is. The ridges along the back of the blade allow you to get your thumb behind the blade to push through tougher material.

One ergonomic drawback that wasn't obvious is that the knife is so thin, it's hard to open with gloves on. The stiff opening action also makes it a bit difficult to use when your hands are wet, which is a drag if you have to work in the rain or you're sweating in the heat.

I've never had the knife open in my pocket, but I still use the blade lock most of the time just in case.

This is a great everyday knife--it's small and slim enough that I forget it's in my pocket, which means I'm not tempted to leave it at home. The short blade makes it legal to carry in most American cities.
4 people found this helpful
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Austin Skipper
5.0 out of 5 stars Perfect carry knife
Reviewed in the United States on January 25, 2016
Verified Purchase
Perfect carry knife. I literally forget that it's in my pocket. Super thin and super slim. I've been carrying it now for about a month, and haven't had any issues with it opening without my doing so. Admittedly, the lock is a bit tricky if you're not used to it, but after a day or so of fiddling with it, I had it down pretty well. Also, the assisted opening takes a few tries to get used to, but now it's as easy as any other assisted knife to open. If you want a thin knife for the occasional opening boxes or cutting open some packaging, this is your knife.
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Tim Cormier
1.0 out of 5 stars The knife was unsafe.
Reviewed in the United States on February 21, 2024
Verified Purchase
It is very hard to open, and I CUT MYSELF DOING IT; CLOSING IT WAS ALSO DIFFICULT WITHOUT CUTTING myself. IT IS A TERRIBLE DESIGN.
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S. Livingston
2.0 out of 5 stars Difficult to open & close. Doesn't lock open
Reviewed in the United States on March 6, 2024
Verified Purchase
I like the form and edge on this knife but it takes two hands to open and close. It won't lock open unless I push down on the release lever on the back. It would be helpful if instructions were included. I can't figure out what the little flat spade under one side of the lock is supposed to do. I've opened and closed it at least a hundred times and it seems to have gotten tighter! I'm very concerned about cutting myself both opening & closing it. I like how low it carries, but sometimes it hangs up on the fabric of my pants when I try to remove from my pocket. None of my other knives have this issue either. It's near useless. That's a shame because I'd really like it of it was functional. I wouldn't recommend it at all.
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Navy Davy
3.0 out of 5 stars Unimpressive Performance
Reviewed in the United States on January 18, 2016
Verified Purchase
The SJ31-cP Slim Jim packaging is very well designed. That alone can attract more customers than the knife itself. The packaging lured me in. The knife is very thin and therefore, so is the blade. The blade is exceptionally sharp. The blade lock is difficult to use since it is very small and slides under the blade release. Not a very good design. The opening mechanism is not strong. When the blade knob is pushed, the blade opens relatively slowly. Perhaps the spring is not as strong as it should be. I would prefer a quicker, more responsive opening - like the Kershaw. I like the knife, but it's not one of my favorites. If you haven't handled a Kershaw, you owe it to yourself to take a look. All-in-all, I would select the Kershaw.
One person found this helpful
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Top reviews from other countries

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Cliente de Kindle Kika
5.0 out of 5 stars Buena compra
Reviewed in Spain on February 21, 2016
Verified Purchase
Llego rapidamente y una vez en la mano comprobe que es una muy buena compra. Muy ligera, facil de llevar, no abulta en el bolsillo y su sitema de seguridad es muy bueno. El unico pero es que quiza sea un poco dura al abrirla.
2 people found this helpful
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