USWE Ultraflask
Best hydration solution for endurance runners needing quick, hands-free access.
This flask solves the mid-run hydration struggle by keeping your water accessible without forcing you to break stride. While the extended tube adds a bit of bulk compared to standard soft flasks, the convenience of sipping on the move makes it an essential upgrade for serious endurance efforts.
$19.99
at
The Feed
Who it's for
- Ultrarunners needing to minimize pack bulk and movement
- Athletes requiring rapid hydration during intense movement
- USWE vest owners seeking a secure, bounce-free fit
Who should skip it
- Users wanting low-maintenance, easy-to-clean hydration gear
- Hikers carrying gear with sharp or abrasive edges
- Runners needing quick, one-handed refills at aid stations
Performance breakdown
Hydration Accessibility
Extended tube and bite valve make mid-run hydration effortless and fast.
Durability
Abrasion-resistant TPU and RF welded seams withstand rugged trail conditions easily.
Versatility
Handles everything from frozen slush to hot liquids without compromising integrity.
Maintenance Ease
Top-rack dishwasher compatibility simplifies the post-run cleaning process significantly.
Integration
Designed specifically for USWE packs, limiting compatibility with other brand systems.
Material Safety
BPA and PVC-free construction ensures clean taste without chemical leaching.
Key Specs
Capacity
500ml (16.9 oz)
Material
Ultra-durable, abrasion resistant TPU with RF welded seams
Temperature Range
Can be frozen or filled with hot water (max temp 60° C / 140° F)
Safety
100% BPA & PVC free
Lid Type
Wide-mouth
Included Accessories
Extended tube, Bite valve
Dishwasher Safe
Yes (Top rack)
Know before you buy
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Ask Metto anything about the USWE Ultraflask before you decide.
