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If you're one to go fast and take chances on the hill, then invest in the Asterisk Ultra Cell Knee Protection System. Designed by a group of motocross riders with extensive backgrounds in the use of orthopedic devices, the Asterisk Ultra Cell Knee Protection System provides you with top-shelf knee protection. Thanks to its unique design and Boa fastening system, the Ultra Cell gives you a natural-feeling, custom-fitting knee brace that helps minimize your risk of knee injury while you carve turns down the mountain or flash lines on your dirt bike.

  • Lightweight, rigid, and anatomically-correct A.C.M. frame design distributes impact throughout the structure
  • Asymmetri-glide hinge (rolling-gliding hinge) tracks the natural motion of the knee joint, allows for automatic tibia alignment of the lower frame, and has an adjustable ext. regulator from 0° to 30°
  • Condyle shims let you fine-tune the fit
  • A.R.C. (Adjustable Retention Control) cuff provides rigid lateral support and has a built-in anti-rotation connection, stainless steel retention strips, and Thermo-Formed EV50 shock absorbent foam padding
  • A.R.C.'s inverted adjustment increases your lateral rigidity
  • Anti-rotation tether links the brace to the boot, makes them act as one, and redistributes forces of your lower leg rotation
  • Boa closure system provides you with a smooth even closure with no pressure points
  • Medial macro-adjustment, quick-release tabs, and superb security to strapping for comfort and convenience
  • Tele-tri patella cup (telescoping three-piece design) easily removes and provides full-range of motion coverage of the knee cap and has shock absorbent Thermo-Formed EV50 foam padding
  • Water-resistant, non-corrosive metals and composites stand the test of time, and hand-washable fabrics enhance convenience
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  • Familiarity: I've put it through the wringer

I've used these for motocross and snowboarding and they work great.
For motocross - SIDI boots are big enough to go around them, but other brands may not be, so check your boots first.
For snowboarding - the lower section fits perfectly above any standard boot line so no worries.
I've had 3 knee surgeries -the last one from an ACL blowout. The knee brace that I got for recovery was the same type the NFL players use, and it was $1200 for ONE knee. These asterisks not only provide the same quality of fit and movement care but also provide the kneecap sheild, and aren't nearly the cost for a set of TWO. Wish I would've started wearing these prior to all the injuries!


    These are the toughest season savers ever... the quick lacing boa system provides stellar performance and the ultimate adjustability make for a piece truly worth its salt. With no need to remove your boots to get on and off make it awesome for long hikes through the backcountry where stakes are often high... all in all a great product, my recent acl tear prompted this purchase and has allowed me to recoup my season goals.