SAXX Size Chart Start the day off right in the SAXX™ Underwear Co. Ultra Boxers. Boxer brief crafted from a breathable stretch blend with moisture-wicking capabilities. Patented Mesh Panels offer enhanced airflow and breathability. Flatlock seams reduce chafing and increase comfort. Branded elastic waistband. Ergonomic front pouch provides added lift and support without inner-seam bulk. Functional fly. Seam-free seat. 95% viscose, 5% spandex. Machine wash cold, tumble dry low. Imported. If you’re not fully satisfied with your purchase, you are welcome to return any unworn and unwashed items with tags intact and original packaging included.