Bump & ding protectionMake your Hydro Flask your own with a colorful durable silicone Bottle Boot that protects against bumps and dings. Specifically sized to fit our 32 oz and 40 oz Wide Mouth bottlesFits 32 oz and 40 oz Wide Mouth bottlesRemovable silicone boot adds extra protection to your Hydro Flask bottle.Dishwasher safeNot for use on a stove in a microwave or freezer.