No batteries or external power source required.
You are the heat source! 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. Layers easily under any outerwear
piece, providing warmth when you need it on or off the bike.
Revolutionary, adjustable air chamber technology
for ultimate heat retention
Included Heat Pump bulb, stows in pocket and allows full
adjustability of air density to customize warmth level
