The Aggressor - 1.0 Short Sleeve provides a level of cooling and comfort never seen before in the powersports industry. Klim's second gen of Aggressor Cooling base layers use chemical-free fabric technology for cooling, moisture-wicking and evaporation, making this material unlike other cooling and sweat-wicking fabrics on the market. These fabrics will deliver consistent cooling and wicking performance throughout the lifetime of the garment. When high performance cooling and comfort are crucial on a ride, choose the Klim Aggressor - 1.0 Short Sleeve. Klim Aggressor Cooling mesh fabric with chemical-free cooling technology. Fast-drying, breathable, moisture-wicking, anti-odor. Four-way stretch mesh fabric. Athletic fit. Gusseted seamless underarm for added comfort. Non-abrasive neck and arm cuffs. Low-profile comfort seams. Tagless. Purpose-built athletic riding base layer.