Blue Jay Universal Gel Ankle Support w Hard Exterior Shell Scales Baby stainless steel construction for added 01804 stainless steel construction for added durability You can set the target zone for your training as beats per minute (bpm) as a percentage of your maximum heart rate or as a percentage of your heart rate reserve (HRR%) * Polar Fitness Test: Polar Fitness Test measures your aerobic fitness at rest in just five minutes HCPC Code: L4350 * Color: Black * Interior gel pad provides a comfortable contoured fit while the exterior hard shell minimizes rolling * Upper air and lower gel pads provide a comfortable contoured fit around the ankle * High impact shell minimizes rolling of the ankle without limiting plantar and dorsi flexion * Molded plastic shell is tapered for a comfortable fit in most shoes * Fully adjustable movable straps can be positioned and trimmed for customized fit * Fits left or right ankle