Applied Nutrition Critical Mass new formula. In the new size (6kg), it's excellent value for money for the highest quality mass gainer. UK manufactured to guarantee the highest standards in quality and taste. Applied Nutrition also have all products tested for athletes and they're all on informed sport, so Military and Police officers can use Applied Nutrition without worrying about the contents. Professional and tested athletes can rest assured too. No spiking with these products. Get big, not fat.