Give 'em the bootAdd some personality and extra protection to your Hydro Flasks. We’ve overhauled our boot sizes to ensure a perfect fit and make it easier for you to mix and match. Check the size chart to ensure a great fit.Fits most 32 oz - 40 oz bottlesSee Fit Chart for current sizing.Removable silicone boot adds extra protection and color to your Hydro Flask bottleDoes not fit Lightweight Travel Bottles or KidsDishwasher safe