ONE SIZE FITS MOST MEN AND WOMEN: Standard size and elastic silicone ring fit most people's legs; Outer ring diameter, total length of leg cast protector 78cm, bottom width 44cm, hole diameter 5.5cm. Reusable, thick and durable. Abrasion-resistant and tear-resistant surgical rubber. The clear leg cast protector is made of medical-grade PVC and neoprene, which is lightweight, hygienic, washable and won't stick to your leg. Award-winning waterproof protection - This product is designed to create a comfortable and waterproof protective layer over leg casts and cast protectors. The sticky elastic rubber and tear-resistant material keep casts and bandages dry while bathing, showering, and swimming. EASY TO USE: The waterproof leg sleeves are designed with high elasticity, the sealing mouth will not hinder blood circulation, no tape or strap is required, easy to put on and take off, enough room for cast, bandages, or surgical boots. Durable and Reusable: This leg cast protector has excellent sealing, its material is elastic thermoplastic with high tightness. It is strong, durable, and resistant. This product is suitable for daily use to maintain hygiene after surgery and during recovery.