The Grigri is manufactured by Petzl and it has proven effective. It is bulky and has some weight but truly it can be the ultimate belaying device.
My wife uses this device with ease and convenience since there is always the insurance of a sure catch when you let go of the device and the rope. The locking system is automatic and the rope only slacks when you disengage the lever to slack.
Never go climbing without a Grigri and for more information please follow the link provided here: GRIGRI – Petzl
Review By: Ali Bernie Buga-ay Bernie writes from Saraburi, Thailand Where the Adventchores never end!