Outer Leg Vents Features Zip Outseam Hem Gusset with Additional Snap Adjustments StretchVent Gaiters with Gripper Elastic and Boot Hook Bonded, Reinforced Kickpatches and Hem Jacket-to-Pant Integration Integrated Crotch Gusset Harness-Friendly Zip-Fly Stay-Down Zip Pulls Lot Lift System REGULAR FIT. AUTHENTIC Dryvent technology.