This is equivalent to a Japanese size S. It's very warm because it has a liner. The liner is a bit small, size 34. I bought it at a pub bar in England and have worn it for about two seasons, but the condition is good because I haven't worn it that often. It's unisex, so women can wear it too. Brown corduroy collar jacket with two front pockets and metal buttons. - Brand: Barbour - Color: Brown - Pockets: 2 front pockets - Collar Material: Corduroy - Buttons: Metal buttons Thank you for looking.