Not perfect, but to use anyway ...

The first thing to keep in mind that the future headquarters of the wrist strap logically from the design of the respective Bodies (and its attachment points) depends.

I use the strap to a Canon EOS 650D with attached battery grip. And I can also recommend it to anyone, because by the battery grip the camera is much better without hand strap in his hand, and the additional approximately 4-5cm in height also ensure a better fit a hand strap (no matter what).

Another advantage is that you do not need the lower mounting plate whose quality is usually more "modest" because made entirely of plastic, and only the thread is made of metal. So even with this wrist strap here.

One more general comment on hand loops:
There is a fundamental difference in the way, specifically ones that are attached to only 2 points (top and bottom), and those who have an extra strap / belt for securing.
A wrist strap has at normal camera stance are completely over the back of the hand, so that the knuckles are definitely free. This is due to the attachment points (which actually are indeed the same for all cameras) with hand loops with only 2 points of attachment not.

This hand strap here they do, because they just have the additional strap which keeps it in the desired position. This can be had without any problems operate alone with his left hand. Both the closure as well as the solid / belt adjustment. Although I did not open it, but only loose, because I then have come through by hand.

The here already frequently mentioned point of criticism that the belt loosens by itself is not denied Handzu. Here must / can "rectify" when needed, eg. By additionally installing a piece of Velcro.

The padding for my taste could be slightly thicker. But it is quite OK.

The two points cost 1 star, so, there is only 4 stars.

Whoever finds a better product at a comparable price, it may let us know - thank you!
Otherwise, I can do that part under the abovementioned prerequisites thoroughly recommended.