Medium Flex Boot

Add 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 bottles
• Removable, silicone boot adds extra protection and color to your Hydro Flask bottle
• Does not fit Lightweight, Travel Bottles or Kids
• Dishwasher safe