This is a down jacket from Mountain Hardwear. I mainly used it for belaying during autumn and winter climbing. It's 800FP, so it's light, warm, and packs down small. The zipper opens from the bottom, making it easy to belay. The size is listed as S, but I think it's equivalent to a Japanese M size. I am a male, 175cm tall and weigh 58kg, and it has a fairly loose fit.