This cute denim jacket is a 6 Button double breasted with an extra button inside. The fabric is 100% Cotton and the full jacket lining is 100% Polyester. This jacket pays great attention to detail with Navy buttons on the sleeves and also on the the decorative straps on the side to the back of the jacket. There are 2 flapped usable pockets on the front of the jacket. The collar measures 3 1/4 “ in the back, Sleeves are 13” which are meant to be worn as 3/4 sleeves. Length is 24 1/4” and it is 21” from pit to pit. Hem is 3”. The FREE NECKLACE has no name. It is a silver chain with pretty silver circles fitting together in a circular design. It goes very well with this classy jacket. You are going to love both of these.