Waterproof Knee Shower Bag Post Surgery. New upgraded imported neoprene. The thickness is 3mm, thicker than other 2mm neoprene shower cover on amazon. More durable and pass the tear resistance test. We are sured it can last through the users duration of treatment. Help to keep water out brilliantly, and comes off without issue to the cast or the bandage.How to Measure and Choose the Size? Since individual height difference, the shower cover's wearing position will also be different. Please measure your bandage and wrap's circumference. Make sure it covered inside the size circumference we provided. M size for upper knee circumference from 11.8" to 21.2" (30cm to 54cm).Protective Cast Shower Cover. Elastic watertight neoprene seal and roomy sleeve allows you slide right up into place and keeps the leg/knee absolutely dry. Notice: when taking shower, you will sweat a bit inside the cast but that is normal. If your leg is swelling after surgery, for safe and comfortable shower experience, please keep your shower time within 20 minutes.New Upgraded Blue Neoprene Knee Shower Protector After Surgery. Our Knee shower sleeve is bigger and longer than others. The diameter of the waterproof neoprene band is 8.4 inch, and the length is 19.6 inch. Long and wide enough to meet more opeople's need. The size is especially design based on American's figure.Knee Cover for Showering After Surgery. An excellent post surgery recovery shower aids came to change your life! No more trash bag and tape. Easy to use, keeps your incision covered and free from moisture and water while showering! Though we widen the opening to fits more size leg, it still builds the tight seal on your leg to keep water out. This means you can't wear it too long because it still have the risk of cutting blood.