The Vergo Belay Package includes Trango's assisted braking belay device and a locking carabiner that's perfectly sized for it. This device adds levels of safety specific to multi-pitch climbers. Unlike most assisted braking devices the Vergo's safest way to use is also the smoothest. Clear visual and physical indicators make the Vergo easy to learn and even easier to use safely. Where most assisted braking devices require you to feed slack upwards thereby causing shoulder strain the Vergo promotes a natural process by feeding slack leftwards. It's nearly impossible to override the Vergo even if you're mishandling it especially when compared to to standard assisted braking devices that require you to override the device for a millisecond (or longer) in order to dish out slack lower climbers or allow climbers to continue climbing after taking. The Vergo also works as a guide mode when you're belaying someone from anchors on a multi-pitch.