This is a Grey 100% Wool Shell (Poly Lining) Blazer. While wool, the jacket is lightweight and a slim fit cut. This is perfect for date night, or use around the office. Like all Uniqlo products, it offers quality at an affordable cost point. The Blazer has 3 exterior pockets, 4 interior, a single vent, and 2 buttons. Crushed wool, soft to the touch. Size: Medium Shoulder: 17.75" Chest: 20" Sleeve: 24" Length: 28.25" questions and offers welcomed! comes from pet and smoke free home bundle to save!