If you own a Google Nexus 10, you will be happy to know that Google has you covered err with a cover. The Google Play Store now has a Book cover for your tablet and it is being offered for $29.99. It has a nice matte finish and you can choose between the scarlet and dark gray colors.
When you are not using your tablet, simply close the cover and your tablet will go to sleep waiting for the next time you want to use it. The Book Cover attaches to the back of the tablet and adds the required protection without compromising the size and weight of your Nexus 10.
If you are interested you can head over to the Google Play Store and check if it is available for purchase in your country.
source - Google Play