Especially made of food-grade 18/8 stainless steel, insulated tumbler provides with double-wall vacuum insulation to preserve the temperature of the drinks poured into it. The unique shape is more eye-catching, and the design is wide at the top and narrow at the bottom so that you can easily hold the body of the cup. It makes the coffee cup durable, unbreakable and super easy wash. The travel coffee mug is powder coated for a durable matte finish which is easy to grip.Sweat proof design keeps fingers dry and un-frostbit.