UltrAspire Softflask
Best flexible hydration solution for long distance trail runners.
A highly packable hydration solution that prioritizes ease of use on the trail. The wide-mouth design solves the common struggle of adding ice to soft flasks, while the ergonomic shape ensures it won't snag when you need a quick refill.
$23.95
at
Running Warehouse
More Softflask options
Who it's for
- Trail runners seeking quick transitions during high-intensity races
- Athletes who need efficient hydration without breaking their breathing rhythm
- Long-distance runners prioritizing comfort and stability over many miles
Who should skip it
- Busy athletes looking for low-maintenance gear that is dishwasher safe
- Runners using third-party vests who require a universal flask fit
- Competitive racers who cannot risk water loss from a misaligned cap
Performance breakdown
Ergonomic Stability
Collapsible design eliminates annoying sloshing and bounce during intense trail runs.
Flow Rate
High-flow bite valve delivers rapid hydration without requiring excessive suction effort.
Refill Efficiency
Wide-mouth opening makes quick aid station refills seamless and stress-free.
Material Safety
Clean, BPA-free construction ensures no plastic aftertaste during long-distance efforts.
Packability
Shrinks down significantly as you drink, saving precious vest pocket space.
Maintenance Ease
Top-rack dishwasher compatibility simplifies post-run cleaning and sanitization routines.
Key Specs
Capacity
0.5 Liters
Material
BPA-free, Phthalate-free, and PVC-free plastic
Closure Type
Bite Valve
Dishwasher Safe
Yes
Collapsible
Yes
Reservoir Included
Yes
BPA Free
Yes
Insulated
No
Know before you buy
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Ask Metto anything about the UltrAspire Softflask before you decide.
