Safe and Reusable: This upper arm shower cover is made of waterproof TPU material for effective moisture protection. The inner sleeve features a comfortable and breathable fabric that is durable, washable, latex-free, and non-slip. Safe for Use: Suitable for individuals recovering from injuries, surgeries, or skin conditions. Usage Instructions: Insert the liner and place the sleeve over the arm. Bend your arm and lift the edge with your fingers, then press the sleeve to release air. This creates a tight seal that prevents water from entering. User Compatibility: Designed to fit most adults with a weight range of 45-64 kg, upper arm circumference of 19-23 cm, and lower arm circumference of 16-19 cm. Easy to Wear: The high-elastic opening allows for easy and pain-free application. The cover will not stick to the arm during use and helps keep plaster casts or wound dressings dry while maintaining normal arm circulation. To use: Place the liner inside the cover, put on the sleeve, bend your arm, lift the edge with your fingers, and press the sleeve to remove air. A secure, watertight seal is formed to block water entry.