Long story short, this thing is just about the most portable travel tumbler we've ever seen. It's made from high-quality, dishwasher-safe silicone and polypropelene, which allows the whole cup to collapse into a two-inch disc — straw, lid, sleeve, and all. It holds a pint of whatever coffee, beer, smoothie, or cocktail you're drinking, in the most convenient, eco-friendly, and objectively coolest way possible.