The Ultimate Coffee Mug gives you a classic tumbler combined with the unique features of a travel bottle. Constructed with copper lining, double walled stainless steel and a ceramic inner coating gives this mug the full insulation of a regular thermos. Complete with an adjustable spill proof lid and an easy hold round handle makes this the ideal mug for at home or on the go. Set of 4 includes 2 Blue & 2 White.