Low Profile design eliminates height difference between walker and normal shoe without altering gait while reducing hip and knee pain. Padded liner is ventilated which promotes air circulation and aids in keeping the lower leg cool and comfortable. Size Women's Men's X-Small 3 1/2 - 6 2 - 4 1/2 Small 6 1/2 - 9 5 - 7 1/2 Medium 9 1/2 - 12 8 - 10 1/2 Large 12 1/2 - 15 11-13 X-Large 15+ 13+