ArtiArt Suction Cup Tumbler Portable Sport Cup No Leak No Spill Cup 18.4 Oz, Black Never Fall Over - With a magic sucker on the bottom, it can absorb the smooth surface tightly and won't fall over. In this case, your desktop, keyboard or important documents will be protected from wet. Double Wall Insulated - It will keep the coffee, water, or tea hot or iced. No Leak, No Spill - Good sealing lid helps to avoid the leak and spill. BPA Free - 100% BPA free, food-grade PP. Compact and Portable - It's portable with a strap and convenient for outgoing or travelling. And the mug body is non-slip.