BLU Studio XL D850Q Heavy Duty Kickstand Phone Cover Case (Black) Compatible with Blu Studio XL D850 Hybrid Heavy Duty Dual case. Includes a combination of hard snap on case with a soft silicone skin to maximize your phone protection Custom made with the highest quality material and designed to offer all-around external surface protection to your phone. No tools or instructions needed to install. Designed to offer all-around external surface protection to your phone. Kickstand with perfect viewing angle