The Snap Seal Travel Mug has a one-piece, leak-proof lid that allows for quick and easy cleaning while preventing leaks. The lid easily snaps up for drinking and snaps closed to seal once you've finished. This vacuum-insulated travel mug has a comfortable grip that provides convenient, one-handed drinking for both left- and right-handed users. The mug also fits most car cup-holders as well as most single-serve brewers. It also features a dishwasher-safe lid for easy cleaning.