Strauss Elastic Waist Support and Patellar Knee Support (Free Size) Material: Other In-box Contents: 1 Ideal for weak or unstable waists, sprains, strains, or twisting injuries, super comfortable Provides firm support to the ankle joint with gentle compression increases circulation to relieve pain, speed healing and maintain flexibility Quality fabric (breathable, soft, durable): externally, uses unique perforated, super breathable. Internally, uses ultra-soft and lightweight