Cytosport - Muscle Milk Bars Vanilla Toffee Crunch - 2.57 oz. (73 g) Cytosport Vanilla Toffee Crunch Muscle Milk Bars are nature"s ultimate lean muscle protein bar. Mouth-watering Muscle Milk Protein Bars provide a blend of premium proteins to help fuel your fitness goals. Muscle Milk Bars are also lactose free and contain no trans-fats, so there"s no question you"re getting a nutritious snack when you are on-the-go and time is tight. Whether you need a boost before you hit the gym or a nutritious snack at work, Muscle Milk Bars deliver the satisfying taste and sustained energy of Muscle Milk in two delicious flavors: Chocolate Peanut Caramel and Vanilla Toffee Crunch. Muscle Milk Bars Feature Premium Protein Blend: Premium multi-source protein blend that includes milk protein isolate, milk protein concentrate, casein, and whey. Zero Tolerance: Lactose free. Amazing Taste: Same Muscle Milk flavor-rich indulgence! Muscle Milk Casein MicellesMilk is an extremely complex food that delivers a broad spectrum of immune and nutrition factors to help babies survive and grow. Milk is far more complex than once thought, with over 100,000 different molecular substances estimated. Science continues to gain fresh insights into milk structures. One area in particular has received recent attention-casein micelles. The term "casein micelles" may seem confusing. But once you learn why casein micelles are in human milk, and their role in nutrition, they are easy to understand. Casein micelles are another example of the brilliant strategies Nature uses to solve difficult nutritional problems. Whether you are an endurance athlete or bodybuilder, the casein micelles in Muscle Milk can positively impact your metabolism and help you get the most out of your total milk protein supplement. CaseinIn human milk, there are two main proteins: whey and casein (kay-seen).