Running Soft Flasks

Running Soft Flasks for Trail, Racing and Hydration Vests

A running soft flask is a flexible, collapsible bottle designed for hydration vest pockets, race bibs and running belts. Unlike rigid bottles, it compresses as it empties — eliminating bounce and keeping weight close to the body. CamelBak soft flasks use Trutaste® material for a clean, taste-neutral drink and deliver fast flow through a bite valve without breaking stride.

Sizes

CamelBak running soft flasks are available in 350 ml, 500 ml and 620 ml. The 500 ml is the most common choice for trail races and longer training runs with regular aid stations. The 350 ml works well for shorter efforts or as a second flask in a vest, and the 620 ml suits runners who want more capacity between refills.

Caring for Your Soft Flask

All CamelBak soft flasks disassemble fully for cleaning and are dishwasher safe on the top rack. For a deep clean after runs where sports drinks have been used, CamelBak cleaning tablets remove residue and prevent odour build-up in both the flask and bite valve. Every CamelBak soft flask is covered by the Got Your Bak Lifetime Guarantee.

Frequently Asked Questions

How do I clean a running soft flask?

Disassemble fully, separating the bite valve and cap from the flask body. All parts are dishwasher safe. For a thorough clean, CamelBak cleaning tablets dissolve residue and prevent odours — particularly useful after sports drinks.