Our Swell Guard contain 50% polyester and 50% rubber threads. It can help relieve swelling, pain and discomfort in your leg muscles, penetrate deep into the muscle tissue, increase leg temperature, speed up metabolism, effectively relieve fatigue, and improve overall leg health. The way to use it is simple: make sure the skin on your legs is clean and dry, put your legs over your legs and adjust them as needed. It can provide even and effective support for the legs while maintaining air permeability and comfort, suitable for long-term wear.