Take pride in how you hydrate with the Quencher Boot and Straw Cover Set. Protect your hydration companion from nature, weather conditions or crowds while commuting. Quencher Boot fits snugly on the 40 oz. tumbler base for a softer, quieter landing. This means fewer scratches and provides a nice grip. The soft, silicone Straw Covers — shaped like your favorite tumbler — keeps your Quencher looking good while you stay hydrated.