Nylon pack cloth: Heavy, strong cloth that is normally used on packs (bet ya didn't see that coming).

Nylon cloth: Just standard, light nylon cloth.

Breathable Nylon: Like a cheap form of Gore-tex™

Ripstop Nylon:Nylon that is woven in a criss-cross pattern that prevents rips for occurring.

Mosquito Netting: A very fine, light screen. Often called "No see em" netting.

Polyester/Cotton cloth: Just what I said there. Cloth that is 50% cotton and 50% Polyester.

Insulation: Down or equivalent.

Open cell foam: Foam that if squeezed doesn't pop or crackle. it is commonly used for padding on beds and old mattresses.