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UltrAspire 300ml Soft Flask

Our price: £14.95

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Description

UltrAspire 300ml Soft Flask

300ml · 28mm opening · ~43g

A compact 300ml soft flask for carrying water, electrolyte drink or carbohydrate mix in running vest, waist-pack, shorts or tights pockets. Its slim, contoured shape and flexible body allow it to sit close to the body, while the flask collapses as you drink to reduce fluid movement and sloshing.

The narrower 28mm opening gives the flask a lower-profile cap that helps it lie flatter against the body. A soft silicone bite valve provides direct drinking from the flask.

For greater hydration capacity and a wider 42mm opening for easier refilling and adding drink powder or ice, the UltrAspire 500ml Soft Flask is also available.

Features

300ml capacity: compact hydration for smaller pockets or where less fluid needs to be carried.
28mm opening: provides a lower-profile cap that helps the flask sit closer against the body.
Soft collapsible body: compresses as fluid is consumed, helping reduce movement and sloshing.
Slim, contoured shape: designed to slide easily into hydration and clothing pockets.
Silicone bite valve: provides direct drinking from the flask.
HydraPak collaboration: developed by UltrAspire in collaboration with HydraPak.
PVC and BPA free.

Specifications

Capacity: 300ml

Weight: ~43g

Opening: 28mm

Valve: Silicone bite valve

Dimensions: 7.5 × 3 × 1in

Construction: Flexible, collapsible soft flask

PVC free: Yes

BPA free: Yes

Bottle & Fit

The compact 300ml capacity and 28mm cap make this a useful option for smaller hydration and clothing pockets where a larger flask is unnecessary or less convenient.

Flask fit in running vests, waist packs and clothing pockets depends on the available pocket dimensions and retention system rather than capacity alone.

Need help choosing?

Not sure which bottle or soft flask is right for your vest and hydration setup? See our Running Bottles & Soft Flasks Guide.

For help comparing the UltrAspire range, see our UltrAspire Bottle Guide.

If you are unsure about fit or whether this product is suitable for what you need, get in touch for straightforward advice.