The Glovii Heated Vest features an undeniable unique look! Built with the same Glovii technology that has helped revolutionize the heated world, this great heated vest is intended to be worn as a liner under any outerwear and is powered by any standard USB powerbank. Heats up to 50 degrees Celsius, 122 degrees Fahrenheit on High One Size Fits Most Dimensions: 12” x 16.5” (30.5 x 47cm) Weight: 8.6 ounces (244 grams) BATTERY NOT INCLUDED (Runs on any standard powerbank) Glovii Universal Battery Operated Heated Vest