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INFINIT Hydrate Taster Pack
INFINIT Hydrate Taster Pack
2 Sachets for £2
£3.95 £6.80
Try Hüma Gel
Try Hüma Gel
4 Gels for £2
£2.00 £6.00
Precision Fuel Taster Pack
Precision Fuel Taster Pack
Exclusive to XMiles
£2.50
ecoswash
ecoswash
Eco-Friendly Laundry Sheets
£7.00 £9.00

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Reflex Belt

Visit the Instinct store
£39.95

Introducing the PX 3.1L Trail Running Belt by Instinct, the ultimate solution for runners who demand both functionality and comfort. This innovative belt is designed to simplify your running adventures, eliminating the need for cumbersome backpacks or vests. With a total of six intelligently designed pockets, it offers ample storage space for all your essential items, ensuring you can carry everything you need without hassle.

Product Features

  • Six optimally designed pockets for customised storage
  • Secure front pocket for smaller items like keys and energy gels
  • Two extra-large pockets for a jacket or 600ml soft flasks
  • Tubular pocket with silicone bands for secure pole storage
  • Integrated race bib holder for added convenience
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Select Type: Reflex
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Size Guide:



Product Description

One of the standout features of the PX 3.1L is its secure front pocket, perfect for storing smaller items such as keys, credit cards, or energy gels. Additionally, the belt includes two extra-large pockets, which are ideal for stashing a lightweight jacket or a pair of 600ml soft flasks. This thoughtful design means you can stay hydrated and prepared for any weather conditions without feeling weighed down.

The PX 3.1L also boasts a tubular pocket equipped with silicone bands, providing a secure spot for your poles. Whether you're tackling steep ascents or rugged trails, this feature ensures your poles are always within easy reach. Integrated race bib holders add another layer of convenience, allowing you to attach your bib securely without fuss.

Safety and visibility are paramount, and the PX 3.1L excels in these areas with its reflective loops. These loops make it easy to open pockets even in low-light conditions, and they enhance your visibility to others on the trail. The belt is crafted from stretchable, breathable mesh, ensuring optimal ergonomics and superior sweat dissipation, keeping you comfortable throughout your run.

For the perfect fit, measure 2 cm below your belly button. It's worth noting that these belts tend to run a bit small, so we recommend opting for the larger size. With the PX 3.1L Trail Running Belt, you can enjoy a hands-free adventure, keeping all your essentials secure and accessible, allowing you to focus on the trail ahead.

  • Six optimally designed pockets for customised storage
  • Secure front pocket for smaller items like keys and energy gels
  • Two extra-large pockets for a jacket or 600ml soft flasks
  • Tubular pocket with silicone bands for secure pole storage
  • Integrated race bib holder for added convenience
  • Reflective loops for easy pocket access and enhanced visibility
  • Stretchable, breathable mesh for improved ergonomics and sweat dissipation
  • Recommendation to opt for a larger size for a better fit

About Instinct

Born on the trails of the French Alps and race approved around the world.

Redefining a hydration pack comes from asking the right questions... introducing analytical observations & first hand experience in running the toughest conditions. At the heart of each revolutionary Instinct product is the desire to achieve a greater degree of function, accessibility and ergonomics; Total liberty of movement, zero obstruction and a second skin fit.