Nike Aerolayer S Size: S Color: Black NIKE Nike Aerolayer Aerolayer Therma-FIT Hooded Lightweight Padded Running Jacket Main Material: 100% Polyester, Lining Material: 100% Nylon, Filling Material: 100% Synthetic Fiber I purchased this item new and unused about two years ago and have only tried it on. I intended to use it for running on cold days, but I never did. It's a lightweight, thin, padded garment, so it's perfect for exercise on cold days. As it's running wear, the length is short. I (170cm, 57kg) have tried it on. Although it's only been tried on, it has been stored for a long time, so please refrain from purchasing if you are sensitive to such things.