Used several times for mountain hiking. There are no noticeable stains. Thank you. Gender: Women's [The following is a quote from the online shop's description] This is a wind shell made with a unique ultra-lightweight and ultra-thin material. Lightweight design is pursued in every detail. While preventing wind from entering, it effectively releases stuffy heat, keeping you dry even during intense exercise. It's pocketable, and can be stored in a size that fits in the palm of your hand, making it useful for trekking and running. It has a slightly tight silhouette to reduce flapping in the wind.