OMM Ultra Flexi Flask 350ml Bite Valve

Running Drinks Bottles & Flasks

OMM flasks are flexible and compress down in volume as you drink - eliminating water sloshing/bouncing inside and reducing the sucking effort. The durable thermoplastic allows for easy storage on the move. Also features a secure bite valve to ensure no spills when stored.



  • Durable Thermoplastic
  • Polyurethane (TPU) construction with extra grip
  • Flexible/squeezable, lets you easily squeeze out gels or liquids
  • Compresses as you drink reduces sloshing/bouncing of fluids
  • Fill scale helps you monitor fluid intake (ML and OZ)
  • Slim and lightweight, easy to fill and clean with wide opening
  • Interchangeable straw & bite valve
  • BPA, PVC and Phthalate free, will not taint taste

Technical details:

  • Weight 25g
  • Volume 350ml
  • Dimensions 19 / 5.5 / 3.5cm
  • Fabric TPU
  • 25.5 / 5.5 / 5.5cm
  • 23 / 5.5 / 3.5cm
  • (Thermoplastic Polyurethane)


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Delivery Information

UK Delivery is FREE on orders over £10.

International Delivery within 3 working days via DHL (prices vary according to country).

Priority First Class Delivery within 3 working days (charge £5).

Next Day Delivery available weekdays on orders placed before 3pm for next working day delivery (charge £7).

Orders placed Monday - Friday before 3pm will be dispatched the same day.

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