The Kuhl Kontra Air Pant features 11 mesh vents which make this pant super airy and great for hot weather. Kontra fabric is a cotton/nylon tropical weight oxford weave especially designed for hot, humid conditions. Gusseted crotch and articulated knees. Fit Guide: FULL ~ See the Sizing Chart tab above for specific details on the fit of these pants. * Fabric: main body: 65% Cotton, 35% Nylon. * 11 mesh vents makes this the world's most advanced vented pant. * Super lightweight fabric. * Front, back and side vented pockets. * Patented air vent on the back legs. * Patented gusset * Reinforced grosgrain ribbon for added durability. * Articulated knees. * Kuhl's signature anatomical fit. * Cell phone and wallet pocket designed so you don't have to sit on your wallet. * New fit for Spring 2015 based on feedback from customers to address sizing issues! * Imported * Patented air flow crotch gusset, Patented air flow knee vents.