Enjoy backup power with the 10,000 mAh power bank. Use as a backup charger to power up your phone and other devices. Also, compatible with the Men's Heated Puffy Vest (Item No. 204948), Women's Heated Puffy Vest (Item No. 204949), Women’s Rechargeable Heated Softshell Jacket (Item No. 204950) and Men's Rechargeable Heated Softshell Jacket (Item No. 204951).