11 total vents, including the backs of the knees and crotch Mesh pockets and zippered openings allow you to regulate airflow or lock down your stash 9 pockets: 2 front hand (vented), 2 back (vented), 2 zippered side (vented), 1 welted drop-in, 1 3D cell phone/wallet and 1 coin pocket ENDURO™ fabric construction is lightweight, durable, quick drying and abrasion resistant UPF 50 fabric shields against harmful UV rays Articulated knees Back hems reinforced with grosgrain ribbon for added durability KUHL Klassik fit: not too tight, not too loose