From frosty mocha lattes to homemade piping hot chili at 4,000 vertical feet, Klean's double-wall, vacuum insulation keeps contents hot up to 6 hours and up to 24 iced. Made from high quality, 18/8, food-grade stainless steel and 100% stainless interior, it won't retain or impart flavors. Belay and tow ropes not included.