Soft Flask

The Naked NakedSoft Flask 360ml is a collapsible hydration solution manufactured by HydraPak, designed specifically for runners and athletes who demand lightweight, efficient gear. This low-profile soft flask features a 28mm cap with high-flow bite valve and weighs just 30 grams, making it an ideal companion for ultralight running vests and hydration packs. The flask is constructed from 100% BPA and PVC-free materials, ensuring safe hydration during intense activities.

Its unique collapsible design allows the flask to shrink as you consume liquids, reducing mass and volume throughout your run. The high-flow bite valve enables hands-free drinking without breaking stride, while the low-profile shape maximizes ergonomics in running vest pockets. Each flask comes backed by HydraPak's Beyond Lifetime Guarantee for long-lasting durability.

This soft flask is designed for trail runners, ultrarunners, and endurance athletes who prioritize weight savings and efficient hydration systems. It integrates seamlessly with Naked running vests and can be hand-washed or placed on the top rack of a dishwasher for easy maintenance. Perfect for training runs, races, and long-distance adventures where every gram matters.

• Ultralight at 30g for minimal weight impact during runs
• Collapses as you drink to eliminate bouncing and bulk
• BPA and PVC free for safe hydration
• Low-profile shape fits seamlessly in running vests
• Backed by HydraPak's lifetime warranty

BPA-free and PVC-free plastic materials

At Hewyn, our product selection is guided by a commitment to quality and impact. We collaborate with a trusted network of health professionals who shortlist the latest and most effective items in the wellness space. Each product’s ingredients are rigorously reviewed, ensuring they’re backed by research and offer real health benefits. This process guarantees that every product on Hewyn meets our high standards, delivering only the best for your well-being.