RDX MMA Thermal Compression Shorts Base Layer Boxing Training Fitness Running Exercise Lycra and polyester combined material provides muscle and thermal compression for heat modulation Dri-FIT multi-directional stretch fabric wicks moisture away from body for a cool and comfy training experience MMA, boxing, weightlifting to swimming, cycling and running - these shorts were built for versatility Pelvic compression keeps the MMA shorts secure and in place without budging Special Flat-lock stitching aids durability and makes these Patent Pending MMA Shorts stubbornly resilient