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The KLIM Aggressor -1.0 Base Layer Brief is designed for riders who understand that comfort starts with the first layer. As the coolest option in KLIM's Aggressor layering system, the Aggressor -1.0 Brief uses advanced chemical-free cooling technology built directly into the fabric to help regulate body temperature during high-output activities. Lightweight mesh construction maximizes airflow while rapidly moving moisture away from the skin to improve evaporative cooling and reduce discomfort during long days in the saddle. The athletic fit, 4-way stretch construction, and low-profile seams provide all-day comfort without bunching or chafing under riding gear. Fast-drying, highly breathable, and purpose-built for active riders, the Aggressor -1.0 Base Layer Brief is basically designed for people who somehow start sweating before the ride has even started.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2026
$59.99