Deerhunter Heat Inner WaistcoatDeerhunter Heat Inner Waistcoat Deerhunter's Heat inner waistcoat have an integrated HEAT system that is activated on the left side of the waistcoat with a single click. The heat intensity is adjustable and illustrated by the built in LED light, which indicates the three heat levels of the waistcoat. The waistcoat comes with a zip closure on the front, a water repellent surface treatment and flexible fabric at both sides, which provide a high degree