Size: M Battery not included - Color: Gray/Black - Style: Vest - Features: USB charging compatible This hybrid item utilizes lightweight and highly insulating Techfill, while also considering ease of movement. Product Features: A hybrid vest using Techfill for the front and Techshield for the back. Features a ventilation zipper on the chest. Water-resistant and machine washable. As a new synthetic fiber cotton that combines the warmth (sufficient bulkiness) of natural down and the water resistance of conventional synthetic fiber cotton, it is a thermal insulation material suitable for active winter sports that involve sweating. High-performance insulation that is resistant to getting soggy even when wet and dries quickly. Maintains warmth with a down-like bulkiness (fluffiness). You can exercise outside without worrying about rain. The moisture-absorbing and heat-generating material "Breath Thermo" absorbs moisture generated by the human body and generates heat, providing comfortable insulation. Indicates excellent water repellency, keeping the inside of the garment comfortable. #3-level temperature adjustment #Quick heating #Washable #Polyester #100% #Lightweight #Cold protection #Unisex #Thin #Outerwear #Also for innerwear #Carbon fiber heating Thank you for viewing.