Anti-fog agents, also known as anti-fogging agents and treatments, are chemicals that prevent the condensation of water in the form of small droplets on a surface which resemble fog.
Anti-fog treatments were first developed by NASA during Project Gemini

Shrink Film - a material made up of polymer plastic film. When heat is applied, it shrinks tightly over whatever it is covering.
There are a variety of uses for Shrink wrap and shrink film.
Some typical applications of shrink wrap are for wrapping food, gift baskets, boxes, toys, books, soaps, etc.

Clean the item with a dust rag or damp cloth. If wet, make sure it’s dry before wrapping.
Remove any parts that are easy to detach, such as chair legs. You’ll wrap them separately so they’ll be easier to move and less likely to get damaged.
If you’re wrapping leather/wooden furniture, cover it with paper padding.

Shrink wrap is a type of plastic that shrinks when heated. When it shrinks, it takes the shape of the item it is surrounding.
Shrink wrap is used to package or protect items that range in size from a bar of soap to boats. Small shrink wrapping jobs require the use of a heat gun to melt the plastic
Larger jobs, such as shrink wrapping a boat, require a shrink wrapping machine.