Box of Band-Aid Brand Water Block Flex 100% Waterproof Adhesive Bandages. 100% waterproof bandages block out water, dirt, and germs that can cause infection. Flexible bandages made of fabric-like material for easy application and a comfortable fit. A non-stick Quilt-Aid Comfort Pad helps to cushion painful wounds while they heal. Fabric bandages have a four-sided adhesive that keeps the pad dry under wet conditions.