KLIM AGGRESSOR SHIRT EFIRE (2025)

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.

• Gridded fabric design traps heat
• Flat low-profile seams for excellent minimum-bulk layering
• Engineered specifically for power sports
• Poly-spandex blend
• Anti-microbial
• Moisture-wicking
• Highly breathable
• Fast-drying
• Lighter thinner gussets in underarms reduce bulk and increase breathability/mobility
• Designed specifically for use with KLIM mid-layers and outerwear
• Convertible cuff construction easily used as thumbhole or regular cuff

HEAT SYSTEM
• Heat panels on chest & back (2 upper chest (1 on each side) and 1 vertical on the mid-upper back)
• Lighted touch button control on upper right chest (out of the way of backpacks straps, easy to access)
• Internal wire routing for comfort
• 3 Heat modes: high/medium/low (and off)
• Up to 8 hours on low heat (green light)
• Up to 3.5 hours on medium heat (blue light) 
• Up to 2.5 hours on high heat (red light) 
• Red-blue-green heat level lighting code
• USB-C battery with LED battery life indicator
• USB-C cable included
• Washer & dryer safe (with battery removed)
• Dedicated battery pocket 
• Replacement batteries available

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