N² Fuel SISU ENERGY GEL
optimally absorbed for your use
More energy for your body and momentum that carries you to the finish line. Fewer stomach problems and uncertainties.
✓ 1 : 0.8 RATIO OF MALTODEXTRIN AND FRUCTOSE
✓ LOW-OSMOLALITY DE10 MALTODEXTRIN
✓ 1 POUCH, 10 TIMES MORE CARBOHYDRATES
Refueling is key
Up until now, your dose has been dictated by a small
disposable bag—not your running body.
HAVE YOU ENCOUNTERED THESE PROBLEMS?
✓ Stomach doesn't tolerate it
✓ Run out of energy mid-race
✓ Dosage cannot be adjusted
✓ Refuelling is messy
✓ Litter causes annoyance or can even lead to disqualification
Gel is the most effective energy.
We finished it.
Gel is the most efficient energy the body can get during endurance performance. That's why we designed it to work on the body's terms: carbohydrates in a 1:0.8 ratio and low-osmolarity DE10 maltodextrin are absorbed efficiently and leave the stomach undisturbed — energy flows freely when you need it most. And you dose it according to what your body demands right now — not according to a predetermined serving size.
"I've been in a situation where my body gives its all, but my refueling can't keep up. At the top, you learn the hard way – refueling isn't a minor detail; it either works or it fails. We've made sure that from now on, your refueling will work."
Perttu Hyvärinen
Former elite cross-country skier
The recipe is not based on trends but on research-backed knowledge of absorption.
SISU ENERGY GEL combines maltodextrin DE10 and crystalline fructose, which use two different transport proteins—SGLT1 and GLUT5—simultaneously for maximum absorption.
Jusman So
An award-winning Singaporean chef (Singapore’s Best Rising Chef 2008), currently living in Kuopio, an passionate ultrarunner and the founder of The Endurance Lab podcast. He is responsible for ensuring that the gel still tastes good even at the hundredth kilometer — and that every ingredient is chosen for a reason, not by chance.
Three steps to refueling you can trust
1. Order SISU Energy Gel
The packaging fits directly into your running vest.
2. Start using it already in training
The benefit starts immediately – not just in the race.
3. You can rely on it on race day
One less thing to worry about – energy carries you to the finish line.
We promise you
✓ A taste you won't get tired of.
✓ Energy without stomach problems.
✓ Dose according to your needs.
✓ Based on research, not trends.
✓ Less litter in nature.
Don't let refueling ruin your day
Months of work. You've done it all to get to the starting line, ready.
If your fueling fails, your body won't be able to show what it's capable of
— and all the work you've put in will be for nothing. It doesn't have to be that way.
Fatigue is your only opponent
You'll reach the finish line at a pace dictated by your fitness—not slowed down by an energy deficit or an upset stomach. Everything is ready, and you can focus solely on your run. No need for explanations at the finish line; you can just celebrate!
team N² fuel
“Great to start cooperating with N² Fuel. In endurance performance, energy intake plays a
really important role in successful performance. This is an area I constantly strive to improve, and N² Fuel's products provide an excellent opportunity for this.” – Eevi Bengs
Eevi Bengs
We are proud to support Eevi's refueling as she prepares for the UTMB World Series Finals 100 Mile race in Chamonix at the end of August.
Eevi is one of Finland's most successful ultra-runners, with a long list of gold medals:
- EcoTrail Stockholm 80 km (2026)
- Travessa Trail Generosa 83 km, Spain (2026)
- NUTS Karhunkierros 166 km — course record (2025)
- NUTS 300 Ylläs Pallas 327 km — course record (2024)
- Vaarojen Maraton 130 km (2024)
- GotRun Trail Fest 80 km, Denmark (2024)
- Nuuksio Classic 70 km (2024)
- NUTS Karhunkierros 83 km (2023)
- Vaarojen Maraton 65 km (2023)