How many disposable coffee cups do you go through in a year? Enough that we can all agree that it's time to stop the insanity and start using a super smart reusable cup that fits in your pocket. The Stojo Pocket Cup is made of flexible silicone and collapses into a leak-proof disc when not in use. The cup fits comfortably in your hand and a polypropylene sleeve insulates it from hot and cold beverages. Dishwasher and microwave safe.