Review (4/5): Buy the newer one
Lots of design flaws here: mid-line attachment while in a tree is hard and maybe dangerous if your not prepared to come down another way when you drop a piece of this thing. The "beak" is so hard to push down if you don't buy a separate attachment called the bird flap, it can also burn your fingers if you descend to fast. They apparently fixed this stuff with the new one so just get that.