This foot brace works by a bendable aluminum bar at the instep to hold the foot in a flexed position that your foot maintains the 85-90 degree angle, ensuring the arch staying stretch for maximum comfort. The reason we put Elastic Band in our kit is tight muscles in the calves and feet lead to worse plantar fasciitis pain. Use the band to flex feet, increase blood circulation and relieves tension, which can effectively ease the pain. The strap is multifunctional, also perfect for physical therapy and yoga. It can increase the flexibility of whole body . * Increase blood circulation * Relieve foot pains * Reduce foot swelling * Eliminate pressure and tension * Great to relieve the pain of plantar fascia. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.