Orange Mud Ultraflask Soft Flask
Best flexible hydration flask for long-distance trail runners.
This soft flask is the ultimate cure for the annoying sloshing that plagues long runs. Its body-conforming shape and versatile hose options make it incredibly easy to stash, though the trade-off is a slightly more utilitarian aesthetic compared to sleeker, minimalist alternatives.
$20.95
at
Gio's Outdoors
Who it's for
- Ultrarunners needing to maximize limited pack storage space
- Runners distracted by sloshing liquid during long efforts
- Minimalists prioritizing weight savings for endurance racing
Who should skip it
- Trail runners navigating rugged terrain with sharp gear
- Athletes needing quick refills at busy aid stations
- Runners training in hot climates requiring chilled hydration
Performance breakdown
Slosh Control
Collapsible design effectively eliminates liquid movement during high-intensity runs.
Pocket Compatibility
Slim profile slides effortlessly into standard running vest chest pockets.
Filling Convenience
Wide opening accommodates full-size ice cubes without any struggle.
Versatility
Seamlessly switches between direct bite-valve use and optional hose integration.
Durability
Rugged TPU construction withstands extreme temperatures and daily trail abuse.
Flow Rate
Bite valve delivers consistent hydration without requiring excessive suction effort.
Key Specs
Capacity
600ml / 20 fl oz
Weight
1.5 oz (43 g)
Material
0.25 mm TPU, HDPE
Maximum Temperature
140°F / 60°C
Dimensions
8.25 x 2.6 inches
Lid Type
Screw Cap with silicone bite-valve
Insulation Type
Single Wall
Know before you buy
Still have a question?
Ask Metto anything about the Orange Mud Ultraflask Soft Flask before you decide.
