For over 100 years, Thermos brand has been the leading manufacturer of convenient, insulated products that promote a healthy lifestyle. The Raya line of lunch coolers is a perfect combination of fashion and function. Beneath the fun graphic prints and bright pops of color is premium Isotec insulation which is comprised of a 4mm thick layer of closed-cell polyethylene foam and a heat-sealed PEVA lining. Raya coolers and totes are perfect for packing a lunch for the office or taking sodas and snacks to the beach. Interior and exterior can be wiped clean with a sponge and mild soap.