The Aggressor eFire shirt adds powered heat elements to the most versatile and comfortable layering system available. Designed specifically for KLIM mid-layers and outerwear, the Aggressor eFire heated base layer traps body heat to ensure consistent warmth for a cold day on the snow. KLIM’s eFire heated technology features two vertical panels on the chest and one vertical panel on the upper back. The heating element includes three heat modes – low, medium and high – with long-lasting heating filaments powered by a USB-C charged battery with a hidden zipper battery pocket.

WARNING: Do not use this product in locations that can be submerged by water.

WARNING: Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lighting.

WARNING: Electronic devices, including heated gloves, eFire base-layers and vests, can cause interference with avalanche transceivers and diminish your ability to conduct a search or be located. To minimize interference, keep a minimum distance between your electronic devices and your avalanche transceiver as follows: in search mode, 20 inches (50cm) and in transmit mode, 8 inches (20cm). Reference the owner’s manual for your avalanche transceiver for additional information