Specification: Material: nylon, spandex Color: Black, white Suitable: left or right foot size: S/M: length 57x width 9cm L/XL: length 62.5x width 11.5cm Function: The material is light and breathable, making it comfortable to wear for long periods while providing the support you need to keep your foot in a neutral position. The adjustable tension strap is secured with robust fastening material to ensure the foot remains in the perfect position for maximum pain relief. These plantar fasciitis socks are specially designed to reduce and relieve plantar fasciitis and heel spurs at night. The straps around the calves help keep the sock in place. Adjustable shoulder straps allow you to easily adjust the degree of dorsiflexion to meet your needs. As the plantar fascia is stretched overnight, the tissue heals in a better position. Package includes: 1 pc x plantar fasciitis sock