Case-Mate POP! Case Black / Gray for Samsung Galaxy S2 4G SGH-i777 AT&T version only. This case is not compatible with the Galaxy S2 Skyrocket 4G LTE SGH-i727. Unibody hard/soft design Soft interior silicone meshed with a glossy harder exterior protecting from both impact and shock. Raised bezel with rubberized button covers and sides to provide extra protection and more grip