1.EXCELLENT WATER RESISTANCE: It is made of high resilient silicone, which fits closely to the skin and prevents water ingress. Protects bandages, wounds, and injured areas from moisture and water to avoid infection. 2.UNIVERSAL SIZE: We have improved the aperture of the silicone ring to fit the majority of men and womens arm. Fits the arm circumference from 8 to 20. 25.08(W)16.77(H). 3.SOFT AND COMFORTABLE: Medical grade elastic silicone, soft and skin-friendly, no irritation to the skin; elasticity is appropriate, does not affect blood circulation and will not form strangulation marks. 4.D DESIGN: Removed the plastic ring, more lightweight; the sealing ring is made of softer silicone instead of neoprene, no chemical smell, more comfortable. 5.REBLE: After rigorous testing, it is not easily torn or damaged, and can be recycled many times. 6.APPLICABLE TYPES AND SCENARIOS: It is suitable for the protection of casts, bandages, rashes, abrasions, burns, cuts, wounds. Ideal for adults recovering from arm surgeries or injuries. 7.EASY TO PUT ON AND TAKE OFF: There is no bulky plastic ring, you can put on and take off independently without the help of others, very convenient. 8.SIMPLE STORAGE: Unique hook design, the storage is very convenient. After used, just hang it in a ventilated place, it is quick dry.