Add a unique touch to your S’well while keeping it protected with the NEW S’well Medium Bumper. Designed to extend the life of your S’well, the bumper helps prevent dings, dents and other imperfections while also giving you a better grip for more comfortable carrying on the go. It fits the 750ml Original Bottles. Easy to use, just slide onto your S’well for on-the-go protection. The bottle bumper is made of BPA/BPS-free, food-grade silicone and is dishwasher safe.