Asterisk UltraCell Knee Protection System

The UltraCell™ is built on 10+ years of time-tested and proven designs of the original Cell® Knee Protection System. Those original concepts have been refined, improved, and entirely reengineered to create the UltraCell™. The UltraCell™ is, as its predecessor, completely customizable to the leg while remaining extremely rigid.

Asterisk is also proud to announce a brand partnership with Boa® Technology. The award-winning Boa® Closure System is, in our opinion, simply the best system available today. Boa® Technology has a ten-year, proven track record in a variety of action sports and other industries. With their simple, yet powerfully effective method of closure, it was a natural fit to use the Boa® reels and closure components on our Dual-Independent Securement System. Securing the UltraCell to the leg has never been easier.