Safe & Reusable This upper arm shower cover is Waterproof TPU material. Moisture protection And the inner sleeve of Comfortable and breathable fabric which is durable, washable, latex-free and non-slippery.<br><br>Safe for useCan use for people who is recovering from injuries, surgeries and skin problems.<br><br>Using tips Put on the lining and putting sleeve on, bent your arm and lift edge with finger, then press on sleeve to get air out. And It will form a tight seal which does not allow water in.<br><br>Applicable UserSuitable for most people weighing 45-64kg; upper arm circumference: 19-23cm; lower arm circumference: 16-19cm.<br><br>Easing WearingUpper arm shower cover high elastic opening makes it easily pull in a non-painful way. will not stick on arm when shower. It can always keep the inner plaster casts or wound dressings dry and arm circulation normal.<br><br>Put on the liner and cover, bend your arms, lift the edge with your fingers, and press the sleeve to vent the air. It creates a tight seal that does not allow water to enter.