STrong Knee Sleeves
Sling Shot

STrong Knee Sleeves

A Strong Knee Wrap Built For Convenience And Comfort
Designed To Be Strong And Comfortable Enough To Leave On For Your Entire Workout
4.3  out of 10  (6 Reviews)
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Price: $83.00 ( / Serving)

Product Overview

Key Purpose: Highest Level of Performance

Comparable in strength to a light knee wrap, but with the convenience and comfort of leaving them on throughout the entire workout, these STrong Sleeves have been tested at the World Famous Super Training Gym for over one year by Mark “Smelly” Bell and “Silent” Mike.  The STrong Sleeve provides mild compression with strong rebound to allow a lifter to take on max weights with confidence.


  • Level 3 neoprene to support max effort
  • Provides Sling Shot effect for an additional 20-50 lbs
  • Use during heavy sets for maximum support
  • Stiff and secure, prevents sleeve movement once on your knee
  • Comparable to a light knee wrap
  • Patent pending design creates comfortable fit by removing seams from front and back of knee
  • 7mm thick

Here at Super Training, we are always pushing the envelope.  After the success of our versatile Sling Shot knee sleeves we sought to create a product aimed directly at strength athletes.  We tirelessly tested prototypes with our top lifters like Stan Efferding and Brian Shaw during their biggest lifts.  Countless revisions later we finally had what we were looking for, the best competition knee sleeve money can buy.

Size S M L XL 2XL 3XL 4XL
The Comfort Fit 12-13" 13-14" 14-15" 15-16" 16-17" 17-18" 18-19"
The Competition Fit 13-14" 14-15" 15-16" 16-17" 17-18" 18-19" 19-20"

Ratings & Reviews

STrong Knee Sleeves
Overall Rating
6 Ratings
Verified Buyer Rating
4 Ratings
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Apr 20, 2020
Verified Buyer

It will be very loose after some time

Jan 14, 2018

1 year ago I was squatting 205 for 8, last week I did 405 for 5. I use these for squats only and they have helped tremendously. I have zero cartlidge left in my knees and these have helped more than anything to take pressure off my joints. Best $80 I have ever spent.

Aug 01, 2017
Verified Buyer


Mar 14, 2017
Verified Buyer

Mark bell did a great job with this Knee Sleeves. Amazing. For the first time I used them I did a PR 30LB more.

Mar 10, 2017
Verified Buyer

Having used Mark Bell's slingshot with a good effect, I decided to give the knee sleeves a try. Marketing claims that caught my attention (and subsequently ones I take issue with) are feels like a light knee wrap and provides rebound out of the hole. One, feels nothing like a knee wrap. And before you say "Well, what did you expect". I expected some consistent, evenly supplied support and I didn't get that feeling. It looks and feels like it is made of cheap low density foam. The inside is a non-porous material. Getting them on was not as difficult as I thought it would be, you just can't do the straight pull technique like with other sleeves. Using them, I did not feel any rebound (I have used elitefts and APT double ply...both of which were half the price) as I have with other sleeves. I wasn't expecting a huge rebound but I didn't feel any if at all. I sized according to my knee for the comfort fit, if the strong rebound comes from the competition fit then they need to specify. Overall I'm not impressed at all and would not recommend these. There are much better knee sleeves out there for a fraction of the price. I couldn't bring myself to give it a one star because it's Mark Bell and the slingshot is amazing, but for me that's how they performed.l

Feb 14, 2017

Best knee sleeve I have used to date. Bought them before they were made available on and have loved them ever since I opened the package!

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Designed To Be Strong And Comfortable Enough To Leave On For Your Entire Workout