Portable Battery for Heated Clothing: Ultra compact charging bank works with all thermal USB clothing and heated devices. Compatible with electrically heated vest, heated scarf, heated jacket and coat plus loads more. Extremely lightweight, so you won't notice it on your person while you stay warm. Mini USB Battery Charger: Small rechargeable powerpack, ultra lightweight portable charger pocket size, and only 15mm (0.59 Inches) in thickness. It features dual USB ports plus a USB-C for cell phones. Compatible with iPhone, Samsung Galaxy, Motorola, Google Pixel and other Android Phones.