Come and see our amazing products.Red wine glass.This product does not contain BPA and complies with FDA requirements. It is recommended to wash by hand. It is made of SAN material and has a double-wall structure for heat insulation or liquid insulation. Your unique decoration is inserted between transparent double walls and then ultrasonically sealed to provide insulation. It reduces condensation and eliminates the need for coasters. Welcome to contact me for inquiries. Pls confirm further with us if any query about packing info, inventory status and time schedule.