... frosty cup have double walls, it is made from Acrylic (sterile &innocuous material), the interlayer material is some special-purpose gel, and the ... does not lead to vessel broken, so the cup is safe & non-toxic.How to use:First, keep the cup in the ... :13.4CM - L Volume:400ml Weight:30g Caliber:62mmLogo printing is availableCustomized sizes, styles, designs, printings, colors are welcomed Ice Cup ...