1.[18 or 8 Stainless Steel and BPA Free]Made of food grade 18 or 8 304 stainless steel,lead-,highly insulating,and corrosion-resistant. and never rusting.The cup lid and leak proof rubber ring are made of food grade rubber, of bisphenol A,and have no odor. 2.[Double Wall Insulation Technology] Travel Coffee mugs are made with double-wall vacuum insulation technology,which can keep your drinks warm for more than 6 hours and cold for more than 12 hours,both indoors and outdoors.You can enjoy your favorite drinks for a long time,keeping every sip fresh until the last drop! 3.[Designed for Coffee Lover] 13 oz insulated coffee cup with perfect capacity,designed specifically for coffee enthusiasts.The cup body is equipped with anti slip silicone rings,and the bottom is equipped with anti slip pads,suitable for most car cup holders,which can meet your coffee carrying needs when going out,making your coffee time more comfortable.Enjoy leisurely coffee anytime,anywhere at home,in the office,or on the go! 4.[Multiple Purchasing Options]You can purchase any combination of 10 colors and 1,2,4,or 8 sets.The powder coating process makes the cup beautiful and exquisite,with a high-end texture,it is an ideal gift for friends,family,lovers,birthdays,Thanksgiving,Christmas,and events Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.