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 safeLearn more about how this product aligns with California AB1200 disclosure requirements. /required-materials-disclosure#html-body