Nillkin Sparkle Window Structure Design Leather Case for Lenovo Vibe Z K910 - Retail Packaging - Black Sparkle Leather Case select imported leather and pearl Bottom mix bump PC clamshell design, thin slip, delicate texture, outstanding visual. Structural design window sensitive PET material can be used without having to flip to answer the phone, check the time, camera and other functions which are convenient and practical. Super fiber lining, soft and air permeable, protect the screen protector. Bottom uses imported environmental PC material, salient point design, and jewelry color painting, extraordinary touch and shockproof. The joint of flip cover and bottom shield are manmade, smooth beautiful and durable. Advanced Technology, details decide the quality.