UltrAspire Formula 250 Soft Flask

• 250ml capacity: compact size for carrying concentrated nutrition, gels or a smaller quantity of fluid.
• Large-flow flip-top cap: allows thicker gels and food mixtures to be dispensed more easily.
• Flexible silicone body: soft and squeezable for dispensing the contents.
• Nutrition versatility: suitable for gels, homemade or personalised food mixtures, energy drinks and water.
• Seamless rounded shape: helps make cleaning easier and allows the contents to be squeezed towards the opening.
• Stain-resistant: useful when carrying strongly coloured carbohydrate or food mixtures.
• Taste and odour resistant: silicone does not readily retain flavours or smells.
• Compact when empty: flexible construction collapses down for easier stowage.
• Bottom loop: can be attached to gear or used to hang the flask upside down to dry.
• BPA free.
• Dishwasher safe.

The Formula 250 is especially useful for concentrated nutrition where a conventional drinking valve would be restrictive, including thicker gels and homemade food mixtures. The soft body can be squeezed as the contents are consumed, while the rounded interior helps reduce material being left behind.

It is dishwasher safe. The bottom loop also allows the flask to be hung upside down after washing to help it drain and dry.

Not sure whether you need a hydration flask or a smaller flask for carrying concentrated nutrition? See our Running Bottles & Soft Flasks Guide.

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

If you are unsure whether the Formula 250 is suitable for the nutrition or drink mixture you plan to carry, get in touch for straightforward advice.