Features: Intelligent temperature control system: quickly heat up to 65C within 30 seconds and automatically stop heating. 3-level temperature adjustable: 38-45C / 100-113F, 445-55C / 113 -131F, 55-65C / 131-149. 5pcs metal wirescan be evenly heated to the shoulders, waist, legs, feet and other parts. Skin-friendly polyester fiber fabric keeps you warm and anti-slip and cold insulation epoxy fabric on the back. Hand and machine washable after removing battery.( not included) Can be stored in a very small storage bag. Specification: Material: polyester Color: Black / Grey / Orange (Optional) Metal Wires: 5pcs Power Supply: 5V / 2A 3-Level temperature: 1st Gear: 38-45C / 100-113F 2nd Gear: 45-55C / 113 -131F 3rd Gear:55-65C / 131-149 Duration for 10,000mAh power bank (not included): 1st Gear: 9-11 hours 2nd Gear: 7-9 hours 3rd Gear: 5-7 hours Mat Size: 198 * 61cm / 78 * 24in Package List: 1 * Sleeping Mat (No power bank)