Brand: G.GROUND Stretch Light Cold Protection Blouson 7674-00 Color: Black Size: L Worn only a few times, as I have another one I use regularly. The following is quoted: * Uses a soft and elastic cardboard knit fabric. * Combines lightness and heat retention. * Moderate stretch that doesn't feel constricting. * High visibility due to reflective print. ※ The fabric cross-section has a two-layer knit structure that looks like cardboard. Air accumulates in the intermediate layer between the surface and the back, providing excellent heat retention, and the hollow structure makes it lightweight.