Sleep mode can be triggered by closing the cover. Works flawlessly. One must, however, in this Reader even set only.
It's also great that you can turn the cap all the way back to read if desired. I thought I'll perhaps take the reader for reading from the shell, but no. I'm excited. Can now even simply hold and read.
I had looked at the original Kobo envelope. Bad processed. Reader sits only two small brackets which already has replaced the coating. The shell itself is not fit but bigger and you can not turn well to the rear lid. For the poor quality of the price is simply a joke. Way to high. Glad to have found this envelope. Looks nice, works, fit and the price is just awesome!
I am completely zufriedn and can only recommend the sleeve. Would buy again!
(I bought the black.)