These are the patented insoles proven to reduce pain in the feet, legs, and back. In a clinical study conducted with 50 subjects who wore the insoles over four weeks, participants experienced a reduction of pain in their feet/ankles, knees, backs, and hips. Designed by a pair of board-certified podiatrists and founders of the University Foot and Ankle Institute, the insoles help encourage proper foot alignment to relieve common foot ailments such as plantar fasciitis and bunions. The insoles have arch and metatarsal support, stabilizing heel cups, and cushioning shock absorption. Black. One pair. Men's sizes 7 1/2-15 and Women’s sizes 6 1/2-12.