100% Nylon Imported STYLISH DESIGN WITH ADVANCED FABRIC - The Backcountry Heated Jacket is stylish enough to wear on its own during day-to-day use, yet light enough to function as a base layer. Features 2 waist zipper-close hand pockets and 1 internal storage pocket. Constructed with a 100% nylon outer shell, 100% Primaloft synthetic down core made from recycled material, and 100% polyester liner with ZapSheer Technology. Designed in the USA. TRI-ZONE HEATING TECHNOLOGY - 7.4-volt heating system with three panels - two on the chest and one on the back - delivering consistent warmth to key areas. Powered by a rechargeable lithium-ion battery. LONG-LASTING WARMTH WITH DUAL CONTROL OPTIONS - On high, up to 2.5 hours of heat; on low, up to 10 hours. Adjust temperature via the built-in touch control button or Bluetooth-enabled MW Connect app (iOS & Android), with four heat settings indicated by colored LEDs. RECHARGEABLE BATTERY POWERED - Includes a 7.4V 2200mAh lithium-ion rechargeable battery designed exclusively to power the heating elements of the Backcountry Heated Jacket. ADVANCED FABRIC TECHNOLOGY - Primaloft insulative fabric and layering techniques ensure excellent heat retention. Lightweight, breathable, water- and wind-resistant for unrestricted outdoor movement. EASY CARE - Machine washable (remove battery before washing). Heating elements are safe for standard machine wash cycles.