Adventure essential.Add a little more protection against bumps and dings with a Bottle Boot exclusively for the Hydro Flask Lightweight Trail Series™ collection. Specifically sized to fit Trail Series™ 32 oz and 40 oz bottles.Fits Trail Series™ 32 oz and 40 oz bottles.Removable silicone boot adds extra protection to your Hydro Flask bottle.Perforated for lightweight protection.BPA-FreeDishwasher safeNot for use on a stove in a microwave or freezer.