It's made of 18/8 stainless steel with double-wall, vacuum-insulated construction, comes in several fantastic colors, and holds up to 12 oz. of your favorite beverage. Keeps drinks cold for up to 24 hours and keeps drinks hot for up to 8 hours. This includes a clear lid with drip-free seal. Laser Engraving Sizes : (Laser Small): 1 1/4"w x 3"h; (Laser Standard): 2 1/2"w x 2 1/2"h. (Laser Max Size): 3 1/2"w x 2 1/2"h. Laser Engraving Require 5 day production