Tailwind Soft Flask 500ml Slim product image on transparent background
Three Tailwind Nutrition soft water bottles with black caps, arranged horizontally on white background
Tailwind Soft Flask 500ml Slim product image on transparent background
Three Tailwind Nutrition soft water bottles with black caps, arranged horizontally on white background

Tailwind Soft Flask 500ml Slim

Tailwind Nutrition
Price
Regular price £16.95
Regular price Sale price £16.95
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Tax included. Shipping calculated at checkout.
  • In stock, ready to ship
  • Backordered, shipping soon
  • Free 48Hr Tracked Shipping from £35
  • 1% For the Planet
  • Free returns
  • Secure payments

Pairs well with

Product facts

Know exactly what you are using

Clear serving, nutrition and use information to help you choose and plan with confidence.

Not applicable — this is a reusable accessory, not food or drink.serving size

500ml capacity + 38g empty weightkey amount

1 × 500ml slim flaskavailable formats

Best for

Narrower running-vest or shorts pockets where a longer, slimmer 500ml profile fits better.

Activity fit

  • Running
  • Triathlon
  • Hiking
  • Ultra endurance
Nutrition and active quantities
Not applicable — this is a reusable accessory, not food or drink.
Ingredients
Not applicable — this is a reusable accessory, not food or drink.
Dietary suitability and allergens
  • Not applicable — non-food accessory

Not a food or drink. If you have a material sensitivity, check the item and packaging before use.

Preparation and directions
Wash before first use, rinse after each use and dry fully with the cap open.
Training and event use

Training: Test the fit in your exact vest or pocket and practise drinking, refilling and cleaning it.

Event use: Use for a rehearsed fluid or fuel mix and confirm the slim profile remains secure when full and partly empty.

Certification and testing
Not applicable — equipment accessory.
Cautions and individual suitability
Inspect before use, follow the supplied care instructions and replace the item if it becomes damaged.
Description

 Hydrapak UltraFlask™

Hydrapak’s UltraFlasks™ are crafted to perfectly conform to your body, compressing as you drink to minimize sloshing, bouncing, and spillage. This ensures you get every drop of that Tailwind goodness without hassle.

These flexible soft flasks integrate seamlessly with your current gear, fitting well with Ultimate Direction, Salomon, and Nathan vests.

Features:

  • Transparent: Know precisely how much Tailwind you have left.
  • Collapsible: Ideal for multi-stage or international events, shrinking as you use it.
  • Lightweight: At just 38g when empty, it’s incredibly light.
  • Pliable: Conforms to any shape – hand, belt, or vest – making it more comfortable than rigid bottles.

With a 500ml capacity, they’re perfect for runners using vests with two flask pockets. Fill one with Tailwind for an hour’s energy and the other with water, and you’re ready to go! This is the slim version, as some vests have longer and narrower openings for the flasks. Also, some ultra shorts have deep, slim bottle pockets, designed to fit perfectly with these soft flasks.

To view the full Tailwind range, click here.
Delivery information

UK delivery

48Hr Tracked Shipping is £3.89 on orders under £35 and free from £35.

24Hr Tracked Shipping is £5.79 on orders under £35, £4.49 from £35 to £54.99, and £3.49 from £55.

Delivery times are estimates from dispatch, measured in business days, and are not guaranteed. Available services and final charges are confirmed for your address at checkout. See our delivery policy for full details.
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