I have a similar one for my kite. It has a different locking system. A little heavier than my lever pushing a button to unlock it. It has a push, then you have to turn it over and when releasing the kite you have to push the locking lever down. From my point of view it should block the opposite direction. rest is the same as my other i love. In addition, it will be difficult for children to use the locking system. It took me several attempts before it worked. For those with big hands, you won't be able to grab your whole hand.