MEDIUM BIRCH GRAY TUMBLER BOOT: This colorful, durable silicone Tumbler Boot protects against bumps and dings. Specifically sized to fit Hydro Flask 32-40 oz Travel Tumblers, 32-40 oz Travel Bottles and 20-28 oz All Around Tumblers. FITS: Fits 32 oz Travel Tumbler. Fits 40 oz Travel Tumbler. Fits 32 oz Travel Bottle. Fits 40 oz Travel Bottle. Fits 12 oz All Around Tumbler, Fits 20 oz All Around Tumbler, Fits 28 oz All Around Tumbler. FITS TRAVEL BOTTLES: The medium Tumbler Boot will fit the Hydro Flask 32 oz and 40 oz Travel Bottle. SOFT SILICONE: Removable silicone boot adds extra protection to your insulated tumbler. DISHWASHER SAFE: Easy to clean, Hydro Flask tumbler boots stay clean and colorful.