StilGut Book Type, Leather Case with Sleep/Wake Function for Google Nexus 5X, Cognac Brown Handcrafted Google Nexus 5X case, made of genuine leather On/Off Function: Automatically wakes and puts Nexus 5X to sleep Strong and light: This leather case doesn't weight to your device while providing good protection There is no special closure; the flap works like a book cover - well made hinge and properly trimmed cover ensure the case easily stays close Exclusively designed by StilGut - a German luxury brand. All StilGut products are backed by a two-year warranty.