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a breathable mesh
it’s running with purpose
and effective moisture transportation
letting you easily switch between a full‑frame setup for maximum coverage and a half‑frame configuration for a lighter
The full-length
UltrAspire 1L SoftFlask Sea to Summit a breathable meshThis collapsible SoftFlask, developed by UltrAspire in collaboration with HydraPak, introduces a unique shape and carries 1 liter of fluid that is engineered for long distance performance. The 42mm locking cap prevents leaks while maintaining a low profile silhouette that reduces body contact when used. Its flexible shape allows the SoftFlask to slide easily in and out of the side pockets of the Traverse and Purist. This 1 liter SoftFlask is also
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