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Ultimate Performance

Aire Flex 18 Race Vest Pack - UP6391

Aire Flex 18 Race Vest Pack - UP6391

The Aire Flex 18 Race Vest Pack is perfect for long distance races and events. It is a lightweight hydration pack with enough storage for the longest races and events. Holds 2 x 500ml flexi straw flasks. Wicking air-mesh shoulder straps with padding give this a more comfortable feel. The main pocket also has Internal fixing for an additional 2 litre bladder (not included).

Regular price £50.00 GBP
Regular price £100.00 GBP Sale price £50.00 GBP
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Size guide


6000 Ripstop lightweight nylon fabric. Flasks are made from 100% durable TPU.

Shipping & Returns

Free shipping on all orders of £35 or more. All other orders £5.

We aim to ship all orders placed before 11AM the same day for next day delivery.

If you wish to return an item for any reason please ensure it is unused and in the original packaging.

Care Instructions

Machine wash at 30 degrees before wearing. Do not bleach or tumble dry.

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Product Details

Designed in a race vest style it is easily adjustable. Once adjusted it hugs the body making it comfortable over the longer distances. It has a total of approx. 18 litres of storage space and pockets for when you’re tackling those longer distances, without the added bulk that comes with most hydration back packs.


Made from a 6000 Ripstop lightweight nylon fabric, this pack is durable, yet light and comfortable to wear. The wicking air-mesh shoulder straps with padding give this a more comfortable, flexible fit. An air flow channel in the back adds to the comfort level.
Reflective details help you stay safe during low level light conditions.


Fully adjustable shoulder and chest straps help to make this a custom fit for most body shapes. Single finger zipper loops make it quick and easy to access your belongings.
The main compartment includes a small pocket plus a zippered mesh pocket to help you organise the load and evenly distribute weight.

Hidden mesh external storage system for wet clothes or helmet to keep these items separate from the main compartment.

2 x 500ml Flexi-Straw Flasks included.  Ultra lightweight, flexible and compressible with a soft bite valve.

Each shoulder strap has a zip pocket plus quick stash mesh pockets.  The mesh pockets have an elastic pull chord to keep the items secure. Internal fixing for a 2 litre bladder (bladder not included).

Made from 100% durable TPU.

Technical information

  • Lightweight race vest style pack
  • 2 x 500ml Flexi Flask with straws included.
  • Wicking air-mesh back and air flow channel for breathable comfort in use.
  • Ultra-light air mesh shoulder straps reduces irritation on the shoulders and helps balance weight in the pack for additional comfort.
  • Adjustable chest strap with height slider
  • Reflective details – stay safe as the light fades
  • Twin front secure pockets for phones, keys and maps
  • Twin front stash pockets – ideal for bars, gels and other food (or rubbish)
  • 18L of storage space in main pocket
  • Main pocket has to option of holding a 2.0L bladder if required (bladder not included)
  • Single finger zipper loops – quick and easy to use.
  • Mesh storage hammock for helmets.
Made from 6000 Rip-stop and lightweight nylon.

SIZING – One size fits most (30-50″ chest measurement)