Suit was custom made in the 70s, so composition is unknown. Pretty sure it's wool. High quality construction. I have a little trouble telling what color it is due to colorblindness. Singel breasted suit jacket appears to be around a 42L and the pants are 33 waist 32 length. I am 5'8 and 170lbs so it is a bit big for me. I think it would fit a 5'10, 185lb guy well.