UltrAspire Softflask 500ml w/bitecap

This collapsible SoftFlask holds up to 500mL of fluid and is designed for easy use on the go. Its slim, contoured shape slides smoothly in and out of hydration pockets, making it ideal for running vests. The 42mm wide cap makes it easy to add ice cubes or mix fuel in the flask  Equipped with a soft silicone bite valve.