This tumbler is made from high quality 304 food grade stainless steel. With double vacuum insulation technology that can keep drinks cold for up to 18 hours and hot for up to 10 hours. This is a classic cup, perfect as a coffee cup, travel cup, beer cup, sports cup. Including a clear hard pp lid. Multiple colors and capcities are aviable, a great choice for gift promotion and gift-giving. The surface treatment process for these bottles is powder spray. 3 1/2'' D x 7" H