The Nike Performance Cushioned Crew mid-length training socks (3 pairs) for kids use anti-perspirant technology and targeted cushioning to provide breathable comfort with every touch. They're twice as thick as previous versions and made with Lycra® spandex for a better fit.Dri-FIT technology to help keep you dry and comfortable.Cushioning in key areas for targeted comfort.Breathable mesh fabric on the top of the foot for optimal ventilation.