100% WATERPROOF: It is made of highly elastic silicone, which fits closely to the skin and prevents water ingress. Protects bandages, wounds, and injured areas from moisture and water to avoid infection. UNIVERSAL SIZE: We have improved the aperture of the silicone ring to fit the majority of men and women's arm. SOFT & COMFORTABLE: Medical grade elastic silicone, soft and skin-friendly, no irritation to the skin; elasticity is appropriate, does not affect blood circulation and not form strangulation marks. UPDATED MODEL: Removed the plastic ring, more ; the sealing ring is made of softer silicone instead of neoprene, no chemical smell, more comfortable. REUSABLE: The silicone holes designed with thickened rubber rings around the edges. It is not easily torn or damaged, more , and can be recycled many times. WIDE APPLICATION: It is suitable for the protection of casts, bandages, wounds, etc. Ideal for adults recovering from arm surgeries or injuries. EASY TO PUT ON & : There is no bulky plastic ring, you can easily put it on or take it off, very convenient. Color: Transparent Material: Silicone Package Contents: 1 * Cast Covers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.