Compact and leak-proof, the Aladdin Mocca Thermavac Leak-LockTM 0.35L Mug is ideal for commuting and casual hikes alike. Boasting ThermavacTM technology, the vacuum insulation ensures beverages stay hot for up to three hours, and cold for up to five and a half. Make spills a distant memory with Leak-LockTM technology, an innovative leak-proof lid with a convenient locking slider.