1、Graphene heating, 3 seconds fast heating, quickly provide warmth. 2、Five-stage constant temperature, adjustable through the mobile APP, to meet different warmth needs. 3、USB charging, powered by a 5V power bank, convenient and fast. This graphene thermal heating suit, made of combed cotton and fleece fabric, with a built-in USB intelligent heating system, controlled by a mobile APP, suitable for all body types, women or man, is the ideal choice to resist the cold in winter. Features: Graphene heating, 3 seconds fast heating, quickly provide warmth. Five-stage constant temperature, adjustable through the mobile APP, to meet different warmth needs. USB charging, powered by a 5V power bank, convenient and fast. Washable, not easy to deform, not easy to fade, not easy to shrink, strong durability. Suitable for all body types, unisex, one suit solves all, convenient and practical. Specifications: Colour: Black Material: Outer: Combed cotton Inner: Fleece fabric Power: 5V power bank (not included) Size: M-3XL（Optional） Package size: 37*30*10.0cm / 14.6*11.8*3.9in Weight: M:1.104kg / 2.43lb L :1.180kg / 2.60lb XL:1.214kg / 2.68lb 2XL: 1.354kg / 2.98lb 3XL : 1.360kg / 3.00lb 4L :1.392kg / 3.07lb Package list: 1 x Graphene thermal heating suit 1 x USB charging cable 1 x User manual 1 x Graphene thermal heating suit 1 x USB charging cable 1 x User manual