Icebreakers best-selling boxer shorts redesigned for increased breathability during high-output activities. The all-new Anatomica Zone Boxers feature the same incredible fit and comfort with added ventilation. These lightweight, stretchy and incredibly breathable boxers feature Icebreakers jersey Cool-Lite fabric, which features core-spun fibers, nylon threads wrapped in merino wool for the ultimate combination of next-to-skin softness and durability. In addition to this naturally breathable fabric, they added panels of core-spun eyelet mesh in key areas to provide maximum airflow during active pursuits. The gusseted design aids in range of motion, while flatlock seams throughout provide chafe-free comfort no matter what the day has in store.