i Sports Mass Gainer is a potent formula specifically designed to provide the optimum level of high quality calories, ideal for lean muscle growth, endurance, & high impact activities. As well as supplying all the critical nutrients for supporting fast muscle growth, we believe that, gram for gram, i Sports Mass Gainer is the most calorie concentrated weight gainer on the market today. i Sports Creatine Ethyl Ester, also known as CEE, is an aid for athletic performance & for muscle development in Bodybuilding. As it is an derivative of creatine from which it is made. In the body, CEE is converted back into creatine & has a much better absorbtion rate & a longer half life in the body than regular creatine monohydrate. It is also proposed to bypass the creatine transporter, thereby increasing skeletal muscle uptake of creatine & leading to an increased ability to regenerate ATP.