UltrAspire UltraFlask Bottle
Best versatile hydration solution for trail runners seeking pocket stability
This hybrid bottle bridges the gap between soft flasks and rigid containers, offering a stable, body-hugging fit that stays put while you move. It provides the easy-squeeze convenience of a soft flask with the wide-mouth accessibility of a traditional bottle.
$14.95
at
Ultraspire
More Ultraflask options
Who it's for
- Trail runners seeking quick transitions during races or training sessions.
- Endurance athletes prioritizing efficient hydration without breaking their stride.
- Long-distance runners looking for a stable and bounce-free carrying experience.
Who should skip it
- Minimalist runners using ultra-thin vests who prioritize maximum flexibility.
- Busy athletes who prefer low-maintenance gear that is easy to sanitize.
- Backcountry explorers frequently navigating rugged environments with abrasive gear.
Performance breakdown
Bounce Control
The ergonomic shape stays remarkably stable even during high-intensity trail runs.
Flow Rate
The high-flow valve delivers water quickly without requiring excessive suction effort.
Refill Efficiency
Wide-mouth opening makes mid-race refills and ice loading incredibly fast.
Ergonomic Comfort
Soft-body construction conforms naturally to the hand and body contours.
Packability
Collapsible design saves significant space once the bottle is empty.
Squeeze Utility
Flexible material allows for effortless one-handed hydration while on the move.
Key Specs
Capacity
550 ml
Closure Type
Push/pull valve
Collapsible
Yes
Know before you buy
Still have a question?
Ask Metto anything about the UltrAspire UltraFlask Bottle before you decide.
