20oz Insulated Tumbler A modern take on an old tumbler classic, the 20oz insulated tumbler combines the build and functionality of the original but with a sleeker form facter that is easier to tote around. Constructed out of ultra durable double-wall stainless steel that is vacuum insulated, your drink will remain a consistent temperature 2x longer than your typical glass or plastic containers. Tumbler Brand – Polar Camel Snap on acrylic sipper lid BPA and Lead Free Hand Wash Only DO NOT Microwave