Size L. Unsure of material (materials tag is quite worn), but very lightweight and stretchy. Ribbed pattern. Short sleeve/half sleeve with front quarter zip. No major signs of wear, looks brand new. Slim fit. Very very very dark navy. Almost black, but has slight blue undertones. Last picture is a photo of the sweater (left) compared to a true black garment (right). Covers most of the butt on a 5’7” person. Pit to pit: 18” Length from shoulder to hem: 28” Bin7 Fall winter spring summer year round transition piece layering old money timeless classic capsule wardrobe social gathering night out date night outing golf tennis country club preppy quiet luxury