Nathan 18oz Insulated Soft Flask Size:18oz Designed with our research partners

Designed with our research partners at the University of Portsmouth Institute for Breast Health

With double the clouds

due to variances created during the development and manufacturing processes

The upper is made with lightweight mesh for a softer

Nathan 18oz Insulated Soft Flask Size:18oz Designed with our research partnersDescription: The perfect companion for any walk or run so you can stay cool and hydrated. This large capacity 18oz. soft flask fits great in front hydration vest pockets, or as an extra in the back storage or stash pocket. With the bite top, you can make sure that you have control of where your water or liquids go straight into your mouth and not dripping out the top. The best big time insulation for a big time thirst! CLASSIC DESIGN Our timeless bite