The perfect way to bring your hot lunch! Soups and other hot meals stay hot for 5 hours and won't leak! Great for school, work, hiking, or traveling. Double walled stainless steel. Wide mouth is makes filling and washing easy. BPA-free plastic lid. Hand wash only. Do not microwave. 3.5'' Diameter x 4.8'' H; 12 oz. Also keeps cold food cold for 12 hours. To pack hot food, warm up the thermos with boiling water, let sit for a few minutes with the lid on, then drain the water. Add hot food/drink and put the lid on. To pack cold food, first put thermos in fridge/freezer or fill with ice. Made in China.