The circumference chart is a guideline only. This chart is used to help indicate the appropriate size. The most important indicator is the Mid Kneecap measurement. This measurement should be the basis for the size. To ensure a proper fit, circumference measurements should be taken directly on the skin with the leg straightened, using a soft tape measure. (If a soft tape measure is not available, a piece of string or yarn may be used to calibrate the leg's diameter, then measured against a hard tape measure).

Oblique Axial-Free Motion Hinge
The only hinge ever developed that can contour the inside of a leg at an oblique angle to the outside hinge. This allows for a low profile fit. Simulates the natural knee motion of flexion (bending) and extension (straightening) and automatically aligns /locates /positions /the tibia (shin bone) for a proper fit. Prevents slipping and positioning of the frames on the leg and has a "free" non-restrictive motion. Auto aligning allows for the frame to automatically locate the correct angle of the users lower leg.

Lace-Linear Buckle System
Lace linear for secure comfortable fit. Prevents "roping" across the muscles securing the frame to the leg comfortably. Provides increased protection and eliminates slipping. No stretch laces glide through abrasion resistant lace loops for even distribution and a comforting fit. Single fiber quick release.

Adaptable Tendon Cuff:
Attaches to the upper and lower frame wrapping the thigh and calf. Special tendon stripes retain stiffness at adjusted positions to maintain structural integrity for increased support and protection.

Thermo-Formed Padding Interface:
Thermo-formed for intimate frame and cuff fit. Increases impact resistance. Self centering tibia padding design for shin alignment and comfort.