Styrofoam cups and caps. It keeps the heat in.
paper, as long as it doesnt ignite
A flask :)
Foam cups are commonly used for serving hot and cold beverages like coffee, tea, and soft drinks. They provide insulation to keep drinks hot or cold longer and are convenient for take-out orders or events where reusable cups are not ideal. However, they are not environmentally friendly as they are not easily recyclable or biodegradable.
styrofoam, but warning fammable and unsafe for the environment!
A flask. It also keeps drinks hot.
It is a blend of cotton and polyester and is not 100% cotton. When cotton is blended like this it wrinkles less and keeps it's shape longer. Yet, it can be hotter when worn in hot weather.
Caffiene keeps you up longer.
Foam cups used mainly in vending machines, are cheap to produce and are easily disposable. The foam also keeps the hot liquid warm longer and is not too hot to hold in bare hands.
It keeps ice and cold drinks cold :)
the melt keeps it hotter
the answer is a Thermos because it is made with insulators.
Plastic generally does not keep liquid hotter than a foam container or glass container. Foam containers have better insulating properties, making them more effective at retaining heat. Glass containers also have higher thermal conductivity, which can help keep liquids hotter for longer periods compared to plastic.