Strengthens the foot structure and helps relieve Plantar Fasciitis symptoms and pain. Made with compression and cushioning to provide support and promote circulation. Wear during any activity for relief and help stop the plantar fasciitis pain from recurring. Seamless and lightweight construction makes the socks comfortable and easy to wear. Made of high-quality materials, the socks are breathable and comfortable for all-day wear. The OS1st FS4 Socks are designed to help relieve pain from plantar fasciitis, foot fatigue, and arch and heel pain. These socks are anatomically designed to fit the left and right foot, providing a more custom-like fit. The lightweight and seamless design makes these socks easy to wear during any daily activity or sport. Medical grade compression throughout the socks help to provide the needed support and improve circulation. Made of high-quality materials, the socks are breathable and keep you feeling fresh. Please refer to our sizing guide to ensure you are getting the best fit.