HEX 600D construction to withstand the rigors of track and trail while providing extra breathabilityMesh ventilation areas in the thigh, knee, calf, seat and crotchLaser-cut perforations in key areas for advanced ventilationLeather heat shield panels with DuPont™ Kevlar® stitching located on the inside of each leg for durability and heat resistanceErgonomically pre-shaped and fully vented knee generously contoured to accommodate all types of knee braces and guards while a massive air-intake systemStealth vent zipper located on each leg allows for adjustable ventilationSoft-Flex protective rubber badging ventilated for increased airflowExclusive zipper lock system keeps pants closed and secureAdvanced liner made with stretchy LycraSeat panel sewn to a breathable light mesh to reduce pullingFull-Floating seat surrounded by stretch-rib material moves naturally with your bodyRelaxed leg cuffs for maximum in-the-boot comfortInternal pocket located inside the waistbandSublimated graphics are the highest quality in powerful detailed graphics DUPONT™ AND KEVLAR® ARE REGISTERED TRADEMARKS OF THE E.I. DUPONT DE NEMOURS AND COMPANY.