The silicone case is designed to fit snugly around the base of the stainless steel water bottle, providing durable protection against impacts, scratches, and daily wear. Made from high-quality, BPA-free food-grade silicone, it absorbs shocks and prevents loud noises when the bottle is placed on hard surfaces. Compatible with all DOZZE Kids, Cruiser, and Voyager bottles. Not compatible with Adventurer bottles, other DOZZE cups, or other brands.