1x Warmthru Heated Gloves Heated Socks Rechargeable Li-Po Battery 7.4V 2200MAH

Up to ten hours total heat time on Maximum when you carry this spare battery

Warmthru Vezzoo and SuperVezzoo Vest - Spare Battery

Spare Battery can be discretely tucked away until required, when your main battery runs out. So if you are on a long motorbike journey, or hike, you can continue to stay warm with a fully charged spare battery at your disposal. Be aware, carry a spare!