PORTABLE: Fits most cup holders, making it easier to take with you throughout the dayFOR THE LONG HAUL: Vacuum-insulated stainless steel keeps drinks cold up to 18 hours or hot up to 6 hours, without sweatingDRINK UP: Easy-to-clean lid can be used with or without plastic strawKEEP IT CLEAN: BPA-free; lid and straw are top-rack dishwasher-safe, body is hand wash only