A lift pass pocket is a small dedicated pocket on the lower left sleeve designed specifically for your RFID lift pass. It lets you simply tap your arm against the scanner at the lift gate instead of fumbling to pull your pass out of a pocket or wearing a lanyard around your neck.
If you ride at resorts that use RFID lift passes—which most modern mountains do—this pocket is incredibly convenient and almost essential. It positions the pass in exactly the right spot for the scanner to read it quickly, so you can breeze through lift lines without slowing down or holding up others behind you.
If you're primarily a backcountry rider or ride at smaller hills that still use visual pass checks, you won't miss this feature. But for regular resort skiers and snowboarders, it's one of those small details that genuinely makes your day smoother.