Mobile Warming Classic Vest Heated Textile Men's Motorcycle Heated Vest (Gun Metal, XX-Large) Wind-Shark four-way stretch highly breathable, water-proof fabric Three heating panels lined with steel alloy fiber elements Optimum placement with two panels on the chest and one on the back Includes one 7.4V 2.2Ah rechargeable lithium-ion battery and charger(packaged separately) Battery features built-in four-level thermo-regulating controls