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SIS Variety Pack

SIS Variety Pack

Regular price £7.49 GBP
Regular price £14.00 GBP Sale price £7.49 GBP
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Instant Energy Boost with SIS Go Isotonic Energy 

Are you looking for a quick energy boost during your workout? Then, SIS Go Isotonic Energy is the perfect solution for you. This energy gel is fast-acting and easily digestible, providing an instant energy boost whenever needed. So whether you're an endurance athlete or need an extra burst of energy during your workout, SIS Go Isotonic Energy is the perfect solution.

Stay Hydrated with SIS Go Isotonic Energy 

Hydration is essential for any physical activity, and SIS Go Isotonic Energy provides you with energy and helps you stay hydrated. With its unique isotonic formula, this energy gel is quickly absorbed into your bloodstream, helping to maintain your body's fluid balance. Plus, the added electrolytes help to replace any essential minerals lost through sweat, keeping you at your best throughout your workout.

Enjoy the Delicious Taste of SIS Go Isotonic Energy 

Energy gels don't have to be bland and unappetizing. SIS Go Isotonic Energy comes in various delicious flavours, including lemon & lime, orange, and berry. Not only do they taste great, but they also provide you with the energy you need to power through your workout. With SIS Go Isotonic Energy, you can fuel your body and your taste buds at the same time.

Try a taster box from SIS containing 7 of their GO Isotonic Energy Gels. They contain the following flavours:

  • Apple
  • Lemon & Lime
  • Blackcurrant
  • Orange
  • Pineapple
  • Pink Grapefruit
  • Tropical

These come in 60ml sachets, ready to consume. You shouldn't need to take on any water when you try these either. 

Shipping & Returns

Shipping policy

All orders are processed within 2 business days (excluding weekends and bank holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped. 

Domestic Shipping Rates and Estimates

We offer free shipping on orders over £30 anywhere in the UK estimated delivery 2 - 3 working days


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Science in Sport is the world’s leading performance nutrition brand. SiS combine world-class knowledge and scientific formulations to provide optimal performance solutions across the nutritional needs of energy, hydration, and recovery.

Through their world-leading research and innovation programme, they formulate evidence-based products that genuinely impact performance.

SiS push the boundaries of science and nutrition so that you can push the boundaries of performance. Everything we do is Fuelled by Science.


Since 1992, Science in Sport has fuelled Olympians, World Record Holders and World Champions, from Cyclists to Swimmers and Heptathletes to Runners.

Science in Sport is currently the official sports nutrition partner to professional cycling organisations Team INEOS, the German Cycling Federation and Legion of LA. SiS is also the partner of other high-performing elite institutions worldwide, such as USA Triathlon & English Institute of Sport.

Globally, Science in Sport fuels over 150 professional soccer clubs and is Performance Research Partner to the England Football Association.


When you commit so much time, energy and determination to being the best you can be, you want a sports nutrition partner who truly understands endurance sports – one you can trust to provide the best products and expert guidance.

Our experts, combined with feedback from elite athletes, ensure Science in Sport continues to be at the forefront of product innovation in performance nutrition. Our passion means our products are truly trusted and recommended.


Professional and Olympic athletes trust science in Sport in a range of sports across the world. A vital component of this trust is our approach to preventing banned substances from entering their supply chain and finished products.

SiS are the only brand globally to hold Informed Manufacturer and Informed Sport Product Certification.

Every batch produced receives the recognised and respected Informed Sport certificate.

You will find the Informed-Sport logo on every product that they make.


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    Free shipping available on orders over £30

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    If you need to return an item to us, you can do so within 30 days of purchase.