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Material
Dimensions
Weight
41 g / 1.4 oz
Go 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.
VEST PACK FIT
Soft material conforms to most hydration vests, belts or pack pockets, makes a great addition or replacement running flask.
COMPRESSIBLE
Flexible design shrinks as you drink, reducing water movement.
SPEEDFILL CAP
Designed for fast filling - flips open for quick refills and snaps closed for a leak-proof seal.
CUSTOMIZABLE CAP
Choose between two cap options. Directly mount your bite valve onto the cap or insert the adjustable drink tube to create a straw cap (can be cut to any length).
HIGH-FLOW
Easy to drink bite valve auto-seals after each sip, eliminating annoying drips.
WIDE OR NARROW FLASK
500ml flask features an arrow flange for skinny and longer vest pockets. For wider pockets, the 600ml flask features a wide flange for a better fit.
LARGE OPENING
42mm opening lets you fill the flask easily with ice and drink mixes.
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