Hydrapak Ultraflask 500ml

This product is currently out of stock and unavailable.

Fast and light performance soft flask for trail running. The Ultraflask is so light, you might forget you brought it. Lightweight, optimal hydration, no matter what kind of runner you are.


  • Compressible: Flexible design shrinks as you drink reducing water movement
  • Comfortable fit: Soft material conforms to most hydration vests, belts, or pack pockets
  • Shrinks as you drink to minimize water movement
  • Multi Cap: Includes a bite valve cap and an adjustable drink tube cap
  • High-flow bite valve auto-seals after each sip, eliminating annoying drips
  • Can be used with or without the tube
  • The UltraFlask makes 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
  • 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 (which can be cut to any length)
  • Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity
  • Can be frozen or filled with hot water (max temp 60° C / 140° F)
  • Safe and reliable, 100% BPA & PVC free, top-rack dishwasher safe
  • Capacity: 500 ml / 17 fl oz
  • Dimensions: 255 mm / 9.9 in x 60 mm / 2.3 in
  • Weight: 44 g / 1.5 oz

30 day return policy | Free delivery to IE for orders over €90*
Items such as Kayaks and Surf Boards are currently exempt from delivery and must be collected in-store.

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Hydrapak Ultraflask 500ml