COMFORTABLE FIT
Soft material conforms to most hydration vests, belts, or pack pockets
COMPRESSIBLE
Flexible design shrinks as you drink reducing water movement
CUSTOMIZABLE HYDRATION
Choose between a bite valve and a drink tube cap
SPEEDFILL CAP
Topped with a flip top cap for fast refills at aid stations
FEATURES:
- 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 so you can focus on FKT’s and PR’s
- High-flow bite valve auto-seals after each sip, eliminating annoying drips
- 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 (4 in / 100 mm)
- Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity
- 100% BPA & PVC free, wide working temperature range (can be frozen – max temp 60° C / 140° F)
