Come and see our amazing products. The 12OZ rapid cooling cup is made of stainless steel. It can be quickly cooled to 10 degrees and refrigerated for 3 hours, and can be quickly heated to 45 degrees and kept for 5 hours. It is very convenient to use the USB socket. It is very convenient to carry around and is very suitable for gift giving. Please contact us if you need gift box packaging. Pls confirm further with us if any query about packing info, inventory status and time schedule.