The Mueller-exclusive HydraCinn^TM fabric is the moisture-wicking catalyst behind the HG80 heat management system.  NO SWEAT, NO FUNGUS, NO SEAMS, NO SLIP, NO NEOPRENE. Features:

Flexible steel springs support both sides of the knee yet allow leg flexion and extension

Tibial containment system features a custom secondary shell with stabilizing buttress, rear support strap

Rugged Kevlar outer covering for long-lasting durability

Upper strapping system locks brace in position. Outer mesh shell with bidirectional stretch fabric fastens on the sides then comfortably locks across the quadriceps.

Patented Triaxial Hinge for maximum protection with near normal knee motion.

Available in the following sizes: (measured around the centre of the knee) Small 30-35cm, Medium 35-40cm, Large 40-45cm, X-Large 45-50cm