GoStaks are a smart and sleek advancement in portable nutrition. Durable jars secure tightly to carry powders, vitamins, supplements, snacks, and more. The 150cc jar holds 87% of protein powder servings so whether you pack pre-, intra-, and post-workout supplements to the gym, or simply need a versatile system for snacks and small items, the GoStak has you covered. The GoStak jars are designed to be sleek and compact, giving you just enough room for your supplements, without invading your gym bag. Heading out of town? Take a handful of 150cc jars filled with your post-workout supplements, and you've got an instant recovery shake for every day of the week.