The stojo pocket cup is ultra-portable, leak-proof, collapsible, and reusable. designed by coffee lovers, it's a convenient alternative to bulky travel mugs and better for the environment than disposable cups. Quickly collapses and expands. Breaks down for easy cleaning. Dishwasher and microwave safe. Made from safe, recyclable materials. no bpas, phthalates, leads or glues. Food grade silicone cup and stopper. polypropylene lid and heat sleeve. Comes with heat sleeve that folds up into cup when collapsed, provides stability. Capacity: 12 ounces / 355 ml. Diameter: 3.5, Expanded height: 5, Collapsed height: 2.