Screw-on lid with flap open closure features the leak-proof design. Double-wall, copper vacuum insulated, stainless steel construction. Keeps drinks hot for 8 hours and cold for 24 hours. On-trend, durable powder coating. Fits most K cup coffee machines and standard car cup holders. Leed's Exclusive. 14oz. Laser engraving silver Drinkware will result in a subtle, tone on tone decoration