Ballistic Shell Gel SG Series Case for Samsung Galaxy S II Skyrocket SGH-i727- Black / Black Compatible with the AT&T (SGH-i727) Samsung Galaxy S II Skyrocket Only Advanced three layers of protection Layer 1 - Ballistic shock absorbent polymer Layer 2 - Tough impact resistant polycarbonate shell Layer 3 - Soft silicone equipped with Ballistic Corners