This collapsible soft flask is a squeezable TPU running bottle that shrinks as you drink, so it stops sloshing in a vest or waist-belt pocket and rolls up small when empty. Pick a size from 250 to 600 ml, add a long straw to sip without pulling the flask out, or choose a folding 200 ml cup for race aid stations. It is part of our Sports & Outdoor collection.
Key features
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Shrinks as you drink – the soft TPU body collapses, so a half-empty flask doesn't bounce
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Bite-valve top – squeeze and sip through the valve on the soft flasks
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Long-straw versions – a straw runs from the flask to your mouth while it stays in a chest pocket
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Sizes from 250 to 600 ml – 250, 350, 450, 500 and 600 ml soft flasks, plus 250, 420 and 500 ml gray bottles
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Folding 200 ml cup – a soft cup with a ring handle for aid stations, in four colors
Specifications
| Type |
Collapsible soft flask, soft cup, straw |
| Material |
TPU |
| Soft flask sizes |
250, 350, 450, 500, 600 ml |
| Gray bottle sizes |
250, 420, 500 ml, with or without straw |
| Cup size |
200 ml |
| Spare parts |
Long straw only; gray bottle straw only |
| Use |
Running vests, waist belts, hiking packs |
Frequently asked questions
Which soft flask size should I choose?
A 250 or 350 ml soft flask suits short runs and small pockets; a 500 or 600 ml soft flask suits longer runs. Most running vests take a 500 ml flask in each chest pocket.
What is the straw version of the soft flask for?
The straw version of the soft flask has a long tube with a bite valve, so you can drink while the flask stays in your vest pocket.
Can I put hot drinks in the collapsible soft flask?
Use the collapsible soft flask for cool or room-temperature water and sports drinks; hot liquids can soften TPU.
How do I clean a soft flask?
Rinse the soft flask with warm, soapy water, rinse well and let it dry open, top off, before storing it.
Buying more than one, ordering again, or shopping for a gift or event? Email cs@elysianoble.com with the product link for a personal quote.
Shipping and returns – see our Shipping Policy and Refund Policy for delivery times and how returns work.