With its revolutionary air chamber technology, the FirstGear Heat Pump Vest provides passive heat retention that's totally customizable via the included Heat Pump actuator. Lined with Polyester/bamboo fiber for outstanding moisture management and minimal odor retention. The smooth, nylon exterior layers easily under any outwear piece, providing warmth when you need it on (or off) the bike.
- Included Heat Pump bulb, stows in pocket and allows full adjustability of air density to customize warmth level
- No batteries or external power source required. YOU are the heat source!