\nTough double-walled stainless steel construction, ideal for outdoor use. \nDouble wall insulation keeps drinks hot for 12 hours or cold for 24 hours. \nHolds 660ml / 22oz of your favorite beverage. \nLeak-proof and dishwasher-safe. \nFits all standard cupholders. \nWide mouth for easy filling, drinking and cleaning. \nNaturally BPA free.