SIS, or actually Science in Sport, is a brand associated primarily with their cooperation with the cycling team called Team Sky. It is represented by cyclists such as the world champion Michal Kwiatkowski or Chris Froom who is the winner of Tour de France. The brand is also known for its cooperation with Sir Chris Hoy. The fact that SIS supplements are being used by world-renown athletes says a lot about their quality, desired effect and the fact that SIS nutrients are free of doping. The company's offer includes pre-starters, ( gels, bars and drinks that give us that energy booster) but also supplements that can be used during exercise, post-workout and simply those designed to prepare us for physical exercise, among them bars, powders and gels with the addition of BCAA. Energy gels and REGO Rapid Powder certainly deserve to be distinguished among all of SiS’s products. The company also offers accessories such as shakers or water bottles – available also in the "Team Sky" versions.