Material: the blister pads are made of hydrogel, with rubber coating on the surface, which can prevent pad from water, and hydrogel material is soft, can absorb a lot of water Size: each measures 2.17 x 1.46 inches (LW), right size for you to cover blister and bubble on the toe, heel part Features: this heel blister bandage are adhesive and waterproof, not easy to fall off, you may wear it even when you're taking shower, can be applied during day and night, provides nice wound healing environment for your foot