Engineered to provide flexible, bounce-free hydration on the move, the USWE Ultraflask 0.5L delivers ergonomic fluid delivery for endurance athletes and trail runners. Featuring a pliable soft-flask body that compresses as you drink, this lightweight hydration flask eliminates sloshing and fits comfortably inside hydration vest pockets or backpack harness straps. A high-flow bite valve allows effortless fluid intake during high-intensity trail efforts while preventing accidental leaks during transit. Built for runners, mountain bikers, and adventure racers, this collapsible flask keeps essential fluids ready whenever the trail demands.

• Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity
• Can be frozen or filled with hot water (max temp 60 Degrees Celsius / 140 Degrees Fahrenheit)
• Safe and reliable, 100% BPA & PVC free
• 500ml hydration capacity