Pure Mass Essential is a high calorie weight gainer providing a huge 365 calories per 100g serving from whey protein concentrate, milk protein concentrate, pure fine oats & maltodextrin. Pure Mass Essential takes weight gainers back to basics, providing 28g sustained release protein & 50g carbohydrates from a blend of slow & fast release sources to ensure you get a continued delivery of the calories & nutrients required to achieve your size & strength targets.