Upgrade Silicone Seal Ring: The seal of the knee cast cover is made of premium silicone material with high elasticity that won't tear. The seal ring is soft and stretches easily to fit most leg sizes and casts. Note: Please measure leg length and maximum knee circumference before ordering, especially if you have a cast or bandages. Size Fits Most Adults: The knee shower protector after surgery is easy to put on and take off without touching the wounded area. Item size: 15.7" x 11" (40 cm x 28 cm). Fits adult leg circumferences from 11.8" to 22" (30 cm to 56 cm). Quality Assured: Avoid sharp objects during use. If you have any issues with our waterproof knee cover for shower, please we will respond promptly. Completely Waterproof: Dont let a cast or wound prevent you from showering. Our knee surgery shower cover is fully waterproof and prevents leakage, providing a secure watertight seal around the knee. Ideal for adults recovering from knee replacement surgery, injuries, or accidents. Reusable & Durable: Made from high-quality materials, the knee shower protector is reusable for long-term use. After each use, simply hang to dry and store easily.