The BIVO One is a 21-ounce recyclable stainless steel bottle designed by NASA engineers to offer up flow similar to plastic bicycle bottles, without the plastic taste. In the Bivo One, your water will taste clean and fresh, and you’ll enjoy the full flavor of your GU hydration products.

We teamed up with our neighbors at Hydrapak to design a customized soft-flask with a high-flow nozzle to make fueling for long efforts more convenient and less sticky. The Flask holds 5-Servings of Energy Gel and includes marks on the back to measure your fuel. Fill it with Energy Gel, fuel with it, and reuse it!

(2 Bottles) Small, Semi-Rigid, Easy-to-Clean, Refillable Gu Flask for Sports Nutrition Liquid Energy Gel Flask - Cycling Flask, Running Flask, Triathlons, Marathons. 110ml (3.5oz)

Check out the entire GU Energy lineup all in one spot for a quick and easy shopping experience!

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GU Energy has been powering athletes since 1993 with innovative nutrition solutions. Their energy gels, chews, and drinks are crafted to boost your performance and support recovery, ensuring you stay at the top of your game.

GU Energy UK - Discover our range of effective energy gels, chews / gummies, snacks, food and drinks - all designed to provide energy and hydration for running, cycling and all sports.

GU Gels: The GU Energy Gels are probably the most well-known product of the Californian company and offer a fast, easily digestible source of energy during intense endurance activities. In addition to an optimal blend of carbohydrates and electrolytes, many GU gels also contain caffeine to increase alertness and counteract fatigue.