Fast and light performance soft flask for trail running. The Ultraflask is so light, you might forget you brought it. Lightweight, optimal hydration, no matter what kind of runner you are.
Features:
Compressible: Flexible design shrinks as you drink reducing water movement
Comfortable fit: Soft material conforms to most hydration vests, belts, or pack pockets
Shrinks as you drink to minimize water movement
Multi Cap: Includes a bite valve cap and an adjustable drink tube cap
High-flow bite valve auto-seals after each sip, eliminating annoying drips
Can be used with or without the tube
The UltraFlask makes a great hydration addition or replacement to your running vest, pack, or belt pocket
Vest-pack fit provides bounce-free stability and a flexible flask shoulder to prevent chafing
Large standard 42mm opening lets you fill the UltraFlask easily with ice and drink mixes
Customize your cap with two options depending on your run or vest, directly mount your bite valve or use the straw cap (which can be cut to any length)
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° C / 140° F)
