A close-up lifestyle shot of a cyclist wearing a black SIS helmet and cycling jersey drinking from a white SIS water bottle. The cyclist is wearing reflective gold-tinted sunglasses and a black helmet.

A bright yellow SIS water bottle with a black cap and black printed branding, shown on a light gray background.

SiS

SIS Sports Drink Bottle, 800ml

£6.99

800ml sports bottle for carrying water, carbohydrate drinks and electrolytes during training.

Colour: Clear

Clear Yellow

Product variants

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SiS Sports Drink Bottle 800ml is a practical hydration accessory for carrying water, carbohydrate drinks and electrolyte mixes during training or competition. Its generous capacity suits longer sessions when a larger drink is more convenient than a smaller bottle.

The shaped bottle and sport-style drinking valve are designed for quick access during activity, while the format is compatible with standard cycling bottle cages. Available in Clear and Yellow, it works with SiS powders or everyday water for gym sessions, outdoor training and event preparation.

Product Specifications

Capacity: 800ml. Colour variants: Clear, Yellow. Bottle fitted with a sports drinking valve; compatible with standard bike bottle cages.

Why We Choose SiS

We choose SiS - Science in Sport because they create trusted sports nutrition products designed to help athletes fuel, hydrate and recover with confidence. From isotonic energy gels and electrolyte tablets to recovery drinks and advanced endurance fuelling, SiS supports runners, cyclists, triathletes and active individuals before, during and after training and racing.

Science-Led – Developed with a clear focus on sports science, performance nutrition and real-world athlete needs.

Easy to Use – Practical fuelling solutions such as isotonic energy gels that are simple to take during exercise, with no unnecessary complexity.

Endurance Focused – Designed to support sustained energy, hydration and recovery across running, cycling, triathlon and high-intensity training.

Trusted by Athletes – Used by everyday athletes and elite performers who need reliable nutrition when performance matters.

That’s why SiS is part of the North Sports collection — giving you proven sports nutrition to fuel harder sessions, support recovery and perform at your best.