SiS


SiS BETA + Electrolyte Gel

£2.50

High-carb fuel with hydration support — SiS BETA Fuel + Electrolyte Gel delivers 40g of dual-source carbs and 200mg sodium, helping endurance athletes stay fuelled during long, demanding sessions and race-day efforts.

Quantity Size: Single Serve
Flavour: Raspberry & Lemon

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Key Benefits

  • 40g Carbohydrate Per Gel – High-carb fuelling for long training sessions, races and endurance events.
  • 200mg Sodium Per Gel – Helps support fluid balance and replace sodium lost through sweat.
  • Dual-Source Carbohydrate Formula – Uses a 1:0.8 maltodextrin-to-fructose ratio for advanced endurance fuelling.
  • Built for Long Efforts – Designed for exercise lasting over 2 hours.
  • Supports Higher Carb Targets – Can help athletes work towards 80–120g carbohydrate per hour.
  • Ideal for Warm Conditions – Useful during hot weather, high sweat-rate sessions and long races.
  • Endurance Sport Ready – Suitable for running, cycling, triathlon, sportives, marathons and ultra-distance events.
  • Flexible Pack Options – Available as Single Serve, Pack of 6 and Box of 30.
  • Raspberry & Lemon Flavour – A sharp, refreshing flavour option for race-day and training use.

The SiS BETA Fuel + Electrolyte Gel is designed for endurance athletes who need high-carbohydrate energy and electrolyte support during long training sessions, races and high-intensity efforts. Ideal for running, cycling, triathlon, sportives, marathons and ultra-distance events, each gel delivers 40g of carbohydrate to help maintain energy levels when performance demands are high.

Using SiS BETA Fuel’s advanced 1:0.8 maltodextrin-to-fructose ratio, this dual-source energy gel is built to support higher carbohydrate intake during exercise while helping reduce the risk of stomach discomfort often associated with heavy fuelling. It is especially suited to sessions and events lasting over 2 hours, where athletes may be working towards 80–120g of carbohydrate per hour as part of a structured endurance fuelling plan.

What sets this gel apart is the addition of 200mg sodium per gel, helping support fluid balance and replace key electrolytes lost through sweat. Available as Single Serve, Pack of 6 or Box of 30, and in Raspberry & Lemon, the SiS BETA Fuel + Electrolyte Gel is a practical race-day fuelling option for warm conditions, high sweat-rate sessions and long endurance efforts where both energy and hydration support matter.

Product Specifications

Product: SiS BETA Fuel + Electrolyte Gel
Product Type: Dual-source carbohydrate energy gel with added electrolytes
Format: Single-serve gel sachet
Serving Size: 1 gel
Calories Per Gel: 160 kcal
Carbohydrate Per Gel: 40g
Sugars Per Gel: 19g
Fat: 0g
Protein: 0g
Salt: 0.53g
Sodium Per Gel: 200mg
Carbohydrate Ratio: 1:0.8 maltodextrin-to-fructose ratio
Primary Use: High-carbohydrate fuelling with electrolyte support during endurance exercise
Best For: Running, cycling, triathlon, marathons, sportives, ultra-distance events, hot-weather training and high sweat-rate sessions
Recommended Session Length: Designed for endurance exercise lasting over 2 hours
Suggested Use: Consume 1 gel every 20 minutes during endurance training or racing
Carbohydrate Target Guidance: Supports higher fuelling strategies of up to 80–120g carbohydrate per hour
Available Sizes: Single Serve, Pack of 6 and Box of 30
Available Flavour: Raspberry & Lemon
Dietary / Certification Notes: Vegan and Informed Sport certified
Key Features: 40g carbs per gel, 200mg sodium, dual-source carbohydrate, 1:0.8 carb ratio, electrolyte support and endurance-focused race-day fuelling

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.

Quantity Size: Single Serve
Flavour: Raspberry & Lemon

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