1、USB interface USB‑5V/2A power supply interface, can be connected to the power bank for use. 2、High quality heating material carbon fiber to make the electric heating quickly smoothly without radiation. 3、Zipper pocket for power bank storage, more convenient when going out. 4、Elastic waistband is comfortable, not too tight and durable to long term using. 5、There are 7 different sizes available, suitable for different body size to choose. 1 x Heating Pants Condition: 100% Brand NewItem Type: Heating PantsMaterial: Polyester / Carbon fiber/waterproof materialInput/output: 5V,2AColor: BlackHigh temperature: red =65(±5℃)Medium temperature: white =55(±5℃)Low temperature: blue =45(±5℃)Optional Size: S, M, L, XL, 2XL, 3XL, 4XL Size Length Waist Hip S 93.5cm / 36.8in 57cm / 22.4in 80cm / 31.5in M 94cm / 37in 60cm / 23.6in 84cm / 33.1in L 95.5cm / 37.6in 63cm / 24.8in 88cm / 34.6in XL 97cm / 38.2in 64cm / 25.2in 92cm / 36.2in 2XL 98cm / 38.6in 67cm / 26.4in 96cm / 37.8in 3XL 99cm / 39in 70cm / 27.6in 100cm / 39.4in 4XL 100cm / 39.4in 73cm / 28.7in 104cm / 40.9in Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store