Travel mugs and tumblers are meant to replace lidded cups in a durable way, while also keeping your drink easily accessible. These travel cups often come with sliding sip openings or spouts that let you drink on the go without fear of spills. Thermoses, on the other hand, are built more like time capsules that will preserve the temperature of liquids for longer. These tougher screw-on caps will usually have their own insulation and are ideal for soups and other liquids you want to keep at temperature for long hours. Then of course there are personalized thermos mugs, which combine the convenient cup style of a travel mug with the enhanced insulation of a thermos.