SIS (SCIENCE IN SPORT) Electrolytes & Gels

SIS (Science in Sport) for your training

Whether you’re chasing a new PB, building distance, or keeping pace in team sports, what you use to fuel up can make your sessions feel smoother and more controlled. This SIS (Science in Sport) range sits within our Hydration & gels collection, giving you simple, grab-and-go options to use before, during and after exercise.

Here you’ll find easy-to-use gels and hydration products suitable for training, race day, and everything in between. You choose the format that fits your session, so you can focus on moving, not faffing.

What’s in the SIS hydration & gels range?

This page brings together SIS products that are made to be used on the move. You’ll usually find:

• Isotonic energy gels – smooth, single-serve gels that can be taken without extra water. They’re popular with runners, cyclists and gym-goers who want carbohydrates in an easy-to-carry format. Flavours range from sharp citrus to fruity and refreshing, such as the SiS GO Isotonic Energy Gel Lemon & Lime 60ml.
• Carb-rich gels for longer efforts – these options are suited to longer sessions like long runs, rides or match days where you prefer a higher amount of carbohydrates from one compact sachet.
• Hydration-focused options – products that are all about topping up fluids and salts. These can be used alongside gels if you’re training in warmer weather or for longer periods.

Many people like to mix and match: for example, pairing an isotonic gel like the SiS GO Isotonic Energy Gel Orange 60ml with a hydration product on hotter or longer days.

Explore more hydration & gels

Want to browse beyond SIS? You can compare similar products from other brands in our Soccer Supplement Hydration & Gels range, or focus in on performance fuel with SIS (SCIENCE IN SPORT) Energy Gels.