At Science in Sport they are dedicated to developing the best sports nutrition products to help endurance athletes perform at their best. Their range includes award winning gels, powders, bars and supplements, used by elite athletes around the world.
Concentrated carbohydrate energy in a convenient fast-flow gel, SiS GO Isotonic is the world's first and only isotonic energy gel with a unique patented formulation.
- Fast energy gel - no need for water.
- When you need a fast, convenient energy boost.
- SiS designed the world's first isotonic energy gel to be clean in the mouth and easy to digest.
- Their patented product means it delivers energy fast without the need for extra water.
- Winner of the Queen's award for enterprise, this innovative product continues to be seen at the forefront by endurance athletes.
- Use during endurance sessions and events to help avoid flagging.
- Available in Blackcurrant, Tropical and Orange flavours.
- Box of 30 60ml sachets.
How long will it take to arrive?
Please check the stock availability notice on your item when placing your order. This item is: In stock
Express Delivery Available If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.
How will I know it has been sent?
You will receive an email to confirm when your item has been sent.
You can also check the status of your order and individual items by accessing My Account details and following the prompts.
Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.
It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.
If I'm not completely happy with my item?
Please see our returns policy.
Top Customer Reviews
Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.
excellent product couldn't do without them I have been using these gels for two years now and they are my go to energy form on long rides
SUPER to release energy without any stomach discomfort
I ordered the SIS Gels which are simply the best on the market through PBK. The price was the best available on the Internet and the goods arrived as ordered. The only problem was the delivery time was 3 weeks. I have had deliveries from both CRC and Wiggle arrive in under a week. Your poor delivery service lets down a top quality product...
What can you say when the international peloton use this product. they are the most quick and good taste gel. You do not need to have water, good to digest. Will buy again. SIS is quality for sure
SIS Isotonic Go Gels
Great product ! ...very easy to use, taste good, easy to swallow on the move and seem to do just the job. SIS gels are much better now they have increased the contents values, they now more than compete with the competitions equivalent, except far better value.
Awesome gel. Light taste, almost like water. Goes down easy and almost instant energy.
Very good light taste, ecellent for me! not sticky
I really like these gels. The only thing I would improve is to change the way the top rips off so that the top is still part of the packet when it's opened, as the small tear off part invariably gets spat out on the ground. Let's save the planet SIS
I don't know if it's my imagination but the affect this gel has on boosting my energy levels is like cheating. I've been off the bike for 6 months so my tone and endurance are slowly on the build up, but a tube of this has lifted my development noticeably. What I can say definitively is that I'm impressed with this SIS Del.