urbanista's Profile

High density foam is a yellowish foam that is used in a lot of furniture cushions and in things like egg crate pads for sleeping. I assume he just means that the cushions aren't stuffed with down (like old Eames lounges were) or horse hair (like early mdernist furniture was).

High density foam is less porous than other industrial foam products like sponges or florist foam. Thus, it is somewhat water resistant and is less likely to absorb spilled liquids or sweat (yeah, I know kinda gross).