The Swiss Military Dual Walled Vacuum Flask, model SMF08, offers versatile functionality with its lid doubling as twin cups and a spill-proof cap. Crafted from dual-walled stainless steel with vacuum insulation, it keeps liquids hot for 18?20 hours and cold for 16?18 hours. Its sleek design ensures convenience for various settings, fitting seamlessly into car bottle holders and backpacks. Ideal for office, gym, camping, hiking, and more, this flask proves to be a reliable adventure companion.