Belay device with cam-assisted blocking and anti-panic handle, particularly suitable for learning and intensive use For the belayer that wants versatility! With an anti-panic handle that makes it particularly suited for learning, the GRIGRI + is a cam-assisted blocking device for climbing in the gym or outside. The selector knob allows the user to choose between two belay modes: top-rope or lead climbing. Reinforced for intensive use, it can be used with single ropes from 8.5 to 11 mm.