HydraPak UltraFlask 500ml

Size guide


Dispatched within 48 hours, or 3-5 days if sourced from store.


Order before 1pm for guaranteed next day delivery of this item*


On all orders over £150*


Reserve this item and collect it from one of our stores free of charge

HydraPak pioneered the soft flask category and continue to evolve it with the introduction of their new UltraFlask series. Ultralight, this 500ml version will conform to fit into most running vest pockets, can be used with or without the tube and will shrink as you drink to help minimise water movement.


  • Welded thermoplastic polyurethane
  • Lightweight, flexible, abrasion resistant and durable
  • Large 42mm opening makes it easy to fill
  • High flow bite valve self-seals after each sip
  • Includes two cap sets: one with a removable bite valve mounted directly to the cap and one with an adjustable drink tube that can be cut to a custom length
  • Flexible design shrinks as you drink, reducing water movement
  • Can be frozen or filled with hot water (max temp 60°C/140°F)
  • Top rack dishwasher safe
  • BPA and PVC free
  • Capacity: 500ml
  • Weight: 44g

Q & A

Have you got a question about this product? Have a look below, ask a question or we’d be happy to help via Chat or can call you back!