Bottle is double wall 18/8 grade stainless steel with vacuum insulation. Inner wall is plated with copper for ultimate conductivity to keep drinks hot for 12 hours and cold for 48 hours. 17oz. Drinkware is 1624-74. “For additional protection, all Drinkware pieces will be individually polybagged and inserted in the gift box.” Laser engraving silver Drinkware will result in a subtle, tone on tone decoration