o big. The largest of our ultra-light series, the UltraFlask Speed 600 ml holds more so you can go the distance. Its soft material allows it to fit snugly in most vest pockets and it shrinks as you drink to minimize water movement. Topped with our newest SpeedFill™ cap feature that makes aid station refills a breeze.
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)
SPECIFICATIONS
| CAPACITY | 600 ml / 20 fl oz |
| DIMENSIONS | 186mm x 81 mm / 7.3 x 3.2 in |
| WEIGHT | 46 g / 1.6 oz |
| MATERIAL | TPU, PP/POM, Silicone |