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KS8 Performance Knee Brace


9 reviews
: Grey

With the KS8, you can confidently engage in your favorite activities while receiving optimal knee support. The removable stability splints offer strong but flexible support that can change as your body heals, the ultra-light patella stabilizer ring supports and stabilizes the patella, and our gel grip technology keeps the brace securely in place, giving you the freedom to move with confidence. 

Targeted Conditions:

  • Knee injuries
  • Post-surgery recovery
  • Tendon tears
  • Patella stabilization

Lightweight Stability Brace

  • Adjustable top
  • Removable stability splints
  • Longer length than typical compression knee braces
  • Gel grip helps prevent slipping
  • Patella stabilizer ring

All OS1st Compression Bracing

  • Reduces swelling
  • Uses Compression Zone Technology with medical-grade compression
  • Stops smells with silver anti-microbial treatment
  • Keeps you dry with moisture-wicking fibers
  • Feels like a custom fit with anatomical shaped-to-fit designs
  • Fits under clothing with a thin profile
  • Stays in place while you move

Care Instructions: Hand wash with mild soap and air dry. No bleach or fabric softener.  

Before ordering, use this size chart for accurate fit. 

Size Above Patella Circumference
S 11-12 in 28-30 cm
M 13-15 in 32-39 cm
L 16-18 in 40-47 cm
XL 19-21 in 48-54 cm
XXL 22-24 in 55-62 cm

OS1st_Education sheet-knee sleeve comparison_chart only for website
OS1st knee sleeve comparison chart - KS7, KS7+, KS8 OS1st knee sleeve comparison chart - KS7, KS7+, KS8 OS1st knee sleeve comparison chart - KS7, KS7+, KS8

Customer Reviews

Based on 9 reviews
Steven Sieja
Good fit, easy to put on

I found the braces fit pretty well, snug without pinching. They were able to slide on with no issues. I liked the support ribs, they were firm without being intrusive.


My husband has a weak right knee. He really likes this brace. It fits snugly and gives him very good support without being uncomfortable. He has tried elastic knee sleeves before, but this gives him even more support. especially with the patella stabilizer. It is comfortable to wear for long periods of time, it fits true to size, and it's slim enough to wear under pants.

E. Bredhold
High quality brace, but quite expensive

This knee brace is very nice. The material is thin and goes on easily. The XL fit me perfectly. There's support on the sides but it doesn't limit my range of motion for working out. There's plenty of support around the patella to limit movement. The top has grippy material and velcros for adjustment. I find it's quite comfortable to wear while working out, I haven't worn it for extended periods though. It's definitely on the high side for a knee brace, however it is high quality. It may be worth paying up for this one instead of trying several cheaper ones to find one that works.

Well made

This brace is very well made, offers tight compression and gentle support. It's good for daily use to provide stabilization. The side stabilizers are thin and flexible making this quite comfortable and allowing for ease of movement. The top has an adjustable band to customize the fit. This is a winner!!

Great Support, Great Flexibility!

Fantastic pressure relief
Solid pain relief
Won't ever slip off!
Not noticeable under sweatpants
Seems like really good build quality

Takes more than a couple seconds to put on

This knee brace definitely takes some time to get used to, but it does seem to take considerable pressure off my knee while walking and removes all pain! I'm able to do all kinds of exercises with it (high knees, jumping jacks, jogging, etc.), it just feels kinda weird, but I suppose I've never used a brace quite like this before. If you have the patience to get used to it, it seems to excel at preventing further knee injury and providing relief to any you currently have!