Features Aggressor 1.0 smooth next-to-skin finish maximizes moisture pickup and transmission Low-profile for excellent minimum-bulk layering Engineered specifically for the abuse of power sports Imperceptible Seams Contrast stitching Moisture-wicking Highly breathable Fast-drying Designed specifically for use with klim Mid-layers and outerwear shirt only New convertible cuff construction easily used as thumbhole or regular cuff The layering company Klim engineers a complete array layering solutions for every possible outdoor condition, Specifically designed for the rigors of powered and unpowered outdoor activities Conquer any climate Klim synthetic base layers The ultimate riding experience is now possible when you are intelligently dressed with Klim Engineered for powersports Base layer systems Redesigned from the ground up, the aggressor series provides the most versatile & comfortable layering system available when combined with Klim mid-layers and outerwear systems, you will conquer any climate on planet earth Designed for high intensity output Moisture-wicking / breathable Athletic fit Anti-microbial