Lumii Ark Hybrid Rugged LUMI Series for Nokia Lumia 520/521 - (Black/Dark Blue) Hybrid Protective Case with Gummy TPU design with both hard and soft material provides ultimate protection Convenient built-in kickstand allows for both landscape and portrait viewing modes Complete prevention of screen damages, screen and surface scratches, and wear-and-tear of normal uses Easy installation - just dress on your phone without any tools Designed for your Nokia Lumia 521