The Booklet Crystal collection, realized for Sony Xperia C4 is characterized by the transparent back cover which allows keeping an ultra slim profile, keeping the design of the device unaffected, still granting a complete protection from eventual scratches. The Booklet Crystal collection, in facts, thanks to the practical horizontal opening with cards holders slot inside, totally wraps the shapes of the device, ensuring total protection. Realized in fine eco-leather with the PC back cover, the Booklet collection is available in black.