The Mobicool MDM40 OH vacuum mug fits into most car cup holders and can be opened with one hand, so you can keep your eyes on the road. Designed for practical on-the-go use, the mug is leak-proof when closed, while its tough stainless steel inner body won’t impact the taste of your drink. Coffee or tea stays hot and cold drinks stay cold for many hours thanks to the mug's effective double-wall insulation. All components can be detached for thorough cleaning. This reusable mug is an eco-friendly alternative to disposable paper or plastic cups.