HydraPak Ultraflask Speed 500ml - Soft Flask

The perfect balance of sleek and stable, our signature UltraFlask has a wider form and a durable 3D welded bottom. Soft and pliable material means you can fit it in most pack and larger vest pockets for a snug and secure fit. Topped with our SpeedFill™ Cap for quick refills.

VEST PACK FIT

Soft material conforms to most hydration packs and larger vest pockets for a secure and stable fit.

HIGH-FLOW

Easy to drink bite valve auto-seals after each sip, eliminating annoying drips.

SPEEDFILL CAP

Designed for fast filling - flips open for quick refills and snaps closed for leakproof transport.

LARGE OPENING

42mm opening lets you fill the flask easily with ice and drink mixes.

COMPRESSIBLE

Flexible design shrinks as you drink, reducing water movement.

FILTER COMPATIBLE

Pair with 42mm threaded backcountry water filters including the HydraPak 42mm Filter Cap

DURABLE

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).