The trigger action lid makes this thermo cup leakproof and easy for one-handed use. The lid is fitted with a push button which opens the mouthpiece on top. This unique feature makes the Stanley Trigger Action Travel Mug perfect for sipping on the go. It's also designed to fit in most cup holders so it can come along on your daily commute. The double-wall vacuum insulation keeps your favourite beverage hot, cold or iced for hours. And finally, the lid disassembles for deep cleaning. Every part of this Stainless Steel travel mug is dishwasher-safe.