SiS - Science in Sports

Isotonic gels, high-carb fueling, hydration, and recovery trusted by elite endurance athletes.

Top Offer
–50 %
SIS GO Isotonic Energy Gel Box - 30 x 60ml lemon & lime flavor, box with upright packets in yellow and black on white background. SIS Science in Sport GO Isotonic Energy Gel Box - 30 x 60ml orange flavor, box with multiple orange packets on white background.

GO Isotonic Energy Gel Box

30 x 60 ml - No water needed
(1169)
€66.00 €32.99
–7 %
SIS Beta Fuel Gel Box - 30 x 60 ml orange flavor, black box with hexagonal pattern, SiS logo, and neatly arranged energy gel packets. SIS Beta Fuel Gel Box - 30 x 60 ml strawberry & lime flavor, black packets with nozzle caps and red text on a white background.

Beta Fuel Gel Box

30 x 60 ml - 40 g of CHO per gel
(235)
€53.99 €49.99
GO Electrolyte GO Electrolyte

GO Electrolyte

1600 g / 40 servings - 36 g of CHO per serving
(35)
€29.99
Rego Rapid Recovery Rego Rapid Recovery

Rego Rapid Recovery

500 g / 10 servings - Post-workout recovery, no lactose
(85)
€21.99
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Rego Rapid Recovery Bag

1500 g / 30 servings - Post-workout recovery, no lactose
(85)
€42.99

Best Sellers

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Top Offer
–50 %
Nduranz Nrgy Gel 45 Box - 16 x 75 g orange flavor, black and orange packaging in a cardboard display box with white background. Nrgy Gel 45 Box

Nrgy Gel 45 Box

16 x 75 g - 45 g CHO per gel with electrolytes
(2335)
€39.99 €19.99
Top Offer
–52 %
Nrgy Drink 90 Nrgy Drink 90

Nrgy Drink 90

1200 g / 12 servings - 90 g CHO per serving with electrolytes
(286)
€24.99 €11.99
Top Offer
–50 %
SIS GO Isotonic Energy Gel Box - 30 x 60ml lemon & lime flavor, box with upright packets in yellow and black on white background. SIS Science in Sport GO Isotonic Energy Gel Box - 30 x 60ml orange flavor, box with multiple orange packets on white background.

GO Isotonic Energy Gel Box

30 x 60 ml - No water needed
(1169)
€66.00 €32.99
Top Offer
–56 %
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Nrgy Drink 45 Nrgy Drink 45

Nrgy Drink 45

1200 g / 25 servings - 45 g CHO per serving with electrolytes
(176)
€26.99 €11.99
Top Offer
–33 %
4Energy Electrolytes - 20 effervescent tablets Citrus flavor, white tube with yellow and black vertical label on white background. 4Energy Electrolytes - 20 effervescent tablets Citrus flavor, white tube with yellow and black vertical label on white background.

Electrolytes

20 effervescent tablets / 20 servings - 4Energy electrolyte mix
(59)
€4.99 €3.33
Top Offer
–50 %
4Energy 4Energy Gel Box - 18 x 66 g lemon flavor, box of black and yellow gel packets with lemon illustration on white background. 4Energy 4Energy Gel Box - 18 x 66g orange flavor, open box of orange and black energy gel packets with sunburst and leaf design.

4Energy Gel Box

18 x 66 g - Refreshing taste with fruit juice
(673)
€29.99 €14.99
Top Offer
–49 %
Nduranz Nrgy Gel 45 with Caffeine Box - 16 x 75 g cherry flavor, red and black packets with nutrition info on white background. Nduranz Nrgy Gel 45 with Caffeine Box - 16 x 75g coffee amarena flavor, open display box of red-capped gel packets with black and red design.

Nrgy Gel 45 with Caffeine Box

16 x 75 g - 45 g CHO, 65 or 130 mg caffeine per gel
(716)
€44.99 €22.99
Top Offer
–35 %
4Energy Salty Bar Box - 10 x 45g chocolate raspberry flavor, purple and black packaging with electrolyte branding on white background. 4Energy Salty Bar Box - 10 x 45 g Hazelnut Toffee flavor, black and beige packaging with brand logo, QR code, and bar illustrations.

Salty Bar Box

10 x 45 g - Energy bar with electrolytes
(252)
€16.99 €10.99
Top Offer
–33 %
4Energy 4Energy Bar Box - 10 x 45 g cranberry flavor, red and black packaging with cranberry illustrations, barcode, and QR code. 4Energy 4Energy Bar Box - 10 x 45g raspberry flavor, red and black packaging with raspberry illustrations on white background.

4Energy Bar Box

10 x 45 g - Soft and easy to chew
(216)
€14.99 €9.99
4Endurance Pro Absolute - 84 capsules, brown bottle with gold cap and blue-black label on white background. 4Endurance Pro Absolute - 84 capsules, brown bottle with gold cap and blue-black label on white background.

Absolute

84 capsules / 21 servings - VO2 max booster
(676)
€49.99
Top offer
–25 %
4Endurance Pro Fusion - 90 capsules supplement bottle, brown with gold cap, dark gray label with red accents, benefits listed. 4Endurance Pro Fusion - 90 capsules supplement bottle, brown with gold cap, dark gray label with red accents, benefits listed.

Fusion

90 capsules / 30 servings - Fat burn, VO2 max
(701)
€39.99 €29.99
4Energy Jelly Bar Box - 10 x 25g Lemon Lime flavor, black and lime green box with lemon illustrations on white background. 4Energy Jelly Bar Box - 10 x 25 g Orange flavor, black and orange box with front and side angled view on white background.

Jelly Bar Box

10 x 25 g - 50% fruit
(85)
€11.99
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