The Sleep function works! Properly. With a magnetic closure, the cover is locked and I had no hesitation in so far that it could go up in the pocket or the like.
Putting up works wonderfully. The magnets are strong enough to hold the cover in the respective form.
The only criticism that I find is that the tablet in conjunction with the cover is relatively heavy. But I have moved here also no other cover for comparison. Since my Slim fit really liked.