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 by individuals recovering from injuries, surgeries, or skin conditions. Usage Tips: 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 to prevent water from entering. Applicable Users: Suitable for most adults weighing 45-64 kg, with an 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 comfortable application without pain. The cover will not stick to the arm during use. Helps keep plaster casts, wound dressings, and bandages dry while maintaining normal arm circulation.