I accidentally purchased the wrong size. Midlayer Polygon UL WOMEN'S Polygon UL Vest Product Details Weight: 110g Materials: Outer: 100% nylon, Lining: 100% nylon, Insulation: 100% polyester (Fine Polygon®) Made in Japan An active insulation garment designed for all seasons, pursuing moderate warmth and lightness. This vest specializes in core body warmth and portability. It uses the uniquely developed "Fine Polygon®" as insulation. It maintains loft even when wet from sweat, water, snow, or condensation, ensuring warmth. Furthermore, the lining with hydrophilic coating for sweat management and the fabric with moderate breathability work together to manage sweat throughout the garment, maintaining comfort during activity. It is "packable" and can be stored in a pocket. It achieves a lightweight of only 110g. It can be worn as an L3 midlayer in cold seasons and carried compactly as an insulation garment in warm seasons, making it a convenient piece for all seasons. The 2023 autumn/winter renewal features a redesigned fit that enhances the garment's ability to follow the body's movements. It combines high functionality with stylishness. Machine washable (when using a laundry net). Easy care is also an advantage. ■ Versatility for all seasons ■ Maintains loft even when wet, preventing a decrease in warmth ■ "Breathable" with sweat management and moderate breathability ■ Lightweight and compact ■ Packable (right inner pocket)  How to store it here ■ Contains two sheets of sheet-shaped three-dimensional insulation material "Fine Polygon®" ■ Equipped with Link Vent® for efficient ventilation inside the garment 【Pockets】 ・Hand pockets (left and right) *No zippers ・Inner pockets (left and right) *No zippers ※ This product (Polygon UL) uses extremely thin fabric to balance lightness and functionality. Please be aware that repeated friction, snagging on Velcro or branches, and contact with hard objects may damage the fabric.