If you like to take a fresh cup with you on the road or to work, this is a great travel mug. It is all stainless steel inside and out, with air between the two layers of stainless for insulation. This cup will keep coffee hot for up to 2 hours. The completely spill proof lid also comes apart so the nooks and crannies that harbor bacteria in other cup lids can be fully cleaned out. The generous 18 oz. size and rotating handle for left or right handed users make this a great all purpose cup.