Used a few times after purchase from Stride Lab. Size is M (25.5cm - 29cm). The Gait Happens Toe Spacer is designed to support the natural spread of the toes and provide a comfortable fit. It's designed to be used with shoes that have a foot-shaped design, like Altra, making it easy to incorporate into daily life and when you're out and about. Using it with weight on your feet helps your feet and toes return to their natural position. It can be worn directly on bare feet, over five-finger socks, and even inside shoes with a foot-shaped toe box (i.e., ALTRA). Using it while moving, such as during running or walking (i.e., during your commute, at work, or while shopping), is the best way to help your toes return to their natural position, not just while you sleep.