Toe Strap dorsiflexes the 1st MPJ to provide a specific and sustained stretch to the Plantar Fascia and a sustained, low load stretch to the flexor tendons, Achilles tendon and calf muscles. Loading the Windlass Mechanism naturally brings the foot/ankle to a near 90 degree angle thus eliminating the lever effect and the resulting pressure on the apex of the ankle. Elastic Connector Ring allows for natural flexion of the foot and toes during sleep, returning to the dorsiflexed position when muscles relax. Low Profile Design. One size fits all.