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Ultralight Hydration For Fast Miles
HydraPak UltraFlask Speed 500 ml is built for runners who want simple, reliable hydration without extra bulk. At just over an ounce, this soft flask keeps the load light while still delivering practical volume for training runs, race day, and long efforts. The pliable design sits comfortably in most vest and belt pockets, then compresses as fluid disappears to help reduce slosh and movement.
Available at Foveo Running, the Hydrapak Ultraflask Speed 500 ml brings a clean, efficient feel to hydration, with a streamlined shape and smart details that make on-the-go sipping feel effortless.
Standout Features
- BPA & PVC free construction for a cleaner hydration option
- Leakproof design for dependable carry and transport
- Freezeable build for cold-weather prep or chilled water on warm days
- SpeedFill™ cap for quick refills at aid stations
- Compressible body that shrinks as you drink
- Compatible with use with or without the tube for flexible setup
Designed To Keep Pace With Your Run
The soft flask format makes this bottle easy to stash, easy to sip, and easy to forget about until it is needed. Its flexible body conforms to common hydration vest pockets, running belts, and pack compartments, while the shrinking profile helps keep water from bouncing around during movement. That combination gives the HydraPak UltraFlask Speed 500 ml a practical edge for steady efforts and bigger adventures alike.
Why It Works So Well
SpeedFill™ convenience makes top-ups smoother when every second counts. The flask opens fast, fills fast, and gets back in action fast.
Soft-flask comfort helps reduce hard edges and a bulky feel, making it a natural fit for minimalist hydration setups.
Customizable carry lets the bottle adapt to different preferences, whether a simple soft flask or a tube-and-bite-valve setup feels best.
A Lightweight Choice For Training And Racing
From everyday road miles to technical trail days, this flask supports efficient hydration without crowding the rest of the kit. It is a solid pick for runners looking for a compact, easy-to-use option that keeps things tidy and fast. If a streamlined soft bottle belongs in the setup, the Hydrapak Ultraflask Speed 500 ml is ready to deliver.
Add it to the rotation today and keep hydration light, quick, and race-ready.
CAPACITY
500 ml / 17 fl oz
DIMENSIONS
186mm x 58 mm / 7.3 x 2.3 in
WEIGHT
41 g / 1.4 oz
MATERIAL
TPU, PP/POM, Silicone
500 ml / 17 fl oz
DIMENSIONS
186mm x 58 mm / 7.3 x 2.3 in
WEIGHT
41 g / 1.4 oz
MATERIAL
TPU, PP/POM, Silicone
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)