Power through your workout with necessary comfort afforded to you through the Calvin Klein Air FX Collection. ; Air FX is an update to the former Tech Active program. ; Fabricated from a lightweight, breathable microfiber. ; Crafted from a moisture-wicking micro mesh material designed to improve breathability and prevent sweat build-up. ; Designed for everyday performance. ; Low rise boxer brief design. ; Elasticized waistband with repeat brand mark logo for an iconic flair. ; Double-ply, seamed contour pouch. ; Yoke seam seat takes away bagginess for a more tailored fit. ; 86% nylon, 14% spandex. ; Machine wash, tumble dry. ; 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.