Nathan 18 oz Insulated Soft Flask running bottle

Nathan 18 oz Soft Flask insulated sports hydration bottle with bite valve.

Nathan 532 ml flow-controlled soft running bottle.

This insulated bottle keeps liquids cool 38% longer than non-insulated soft bottles. It is a perfect fit for ALL NATHAN hydration jackets.

Features:

Valve prevents unintentional leakage and controls flow.

Capacity: 18 oz (532 ml).