The front utilizes thick Polartec Alpha Direct (136g/m²) for high insulation and breathability, preventing overheating and stuffiness when active, and keeping the core warm when stationary or in cold conditions, especially when layered with a shell. The back, which tends to get sweaty when wearing a backpack, intentionally avoids Alpha Direct and instead uses a lightweight, breathable shadow ripstop fabric. Size: S Color: Ebony Has a 3cm hole on the front. (From image 6, 0 to 3cm) 2023 model. Will be shipped without a box, but with a postcard.