UltraFlask Speed 600 ML Soft Flask

$23.95 USD Weight 1.9 oz / 54.0 g
Lead Time In Stock

The Hydrapak UltraFlask Speed 600 ml allows you to drink on the go. Its soft material allows it to fit snugly in most vest pockets and it shrinks as you drink to minimize water movement.

The SpeedFill™ cap flips open for quick top ups at aid stations, and the wide mouth can accommodate drink mixes and ice cubes. The included drinking-tube cap can also be swapped out with a BeFree Filter. You can also use just a bite valve without the drinking tube.

A perfect match for our Vest Straps or for our Water Bottle Sleeves. Grab two bottles for balanced hydration.

  • Soft material conforms to most hydration and vest style straps, belts or pack pockets, making it a great addition or replacement running flask.
  • Compatible with 42mm threaded backcountry water filters such as the Katadyn® BeFree™ Filter.
  • Flexible design shrinks as you drink, reducing water movement.
  • Speedfill cap is designed for fast filling - flips open for quick refills and snaps closed for a leak-proof seal.
  • Customizable cap lets you 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).
  • A high-flow, easy to drink bite valve auto-seals after each sip, eliminating annoying drips.
  • The large 42mm opening lets you fill the flask easily with ice and drink mixes.
  • External capacity gauge allows you to track your hydration intake or measure out the contents
  • Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity
  • Safe and reliable, 100% BPA & PVC free
  • Imported.


Bottle weight with cap and drink tube: 1.9 ounces (54 grams)
Bottle alone: .85 ounces (24 grams)

Capacity: 600ml (20 fl oz)

Dimensions: 17.3 in x 3.2 in  (186 cm x 81 cm)

Material: TPU, PP, Silicone