I purchased this about two years ago. It's made of a material similar to the Storm Suit and is warm and comfortable to wear. Recommended for slender people around 170cm tall. I usually wear a size M in NIKE wear, and I could wear this, but it was possible. I felt it was a bit tight, so I think it would be comfortable for those who usually wear size S or those who have a lot of room in size M. Size...S