The shoulder protector has excellent elasticity, made from soft and comfortable material that is lightweight and thin, providing a close fit to the body. It is easy to wear and does not add pressure on the shoulders. Ergonomically designed, this shoulder warmer utilizes heat retention technology to help maintain warmth and support comfort. It can retain heat within 30 minutes, helping to protect against cold, provide warmth, and relieve shoulder discomfort. Made from high-quality polyester cotton, yarn, and spandex. Available in four sizes: S, M, L, and XL, suitable for both men and women, particularly those experiencing shoulder pain, including workers, athletes, and the elderly. Item Name: Shoulder Warmer Material: Polyester Cotton, Yarn, Spandex Gender: Unisex Usage: Keep Warm, Pain Relief Features: Windproof, Soft, Comfortable Size Details: XL, Suitable Shoulder Width: 50-54cm (Approx.) L, Suitable Shoulder Width: 46-50cm (Approx.) M, Suitable Shoulder Width: 42-46cm (Approx.) S, Suitable Shoulder Width: 37-42cm (Approx.)