Ever wonder where rug pads come from? Mostly from leftovers. Each year, around 700 million pounds of polyurethane foam trim is gathered from all over the world from the manufacture of such items as sofas, chairs, mattresses, automotive interiors, textiles, and clothing. This polyurethane foam trim is compressed, baled and transported to approximately 30 U.S. factories, where it is recycled into bonded padding, making it one of the largest uses of recycled materials in the world. Chances are good you’re going to need some rug padding, and we’re here to help with our top picks.