Fit Samsung Galaxy S II Advanced 3 layer protection Soft TPU to absorb the shock of a drop Tough impact-resistant polycarbonate shell Inner-most layer is made of soft silicone to cushion device The Ballistic SG Series Case offers three layers of protection. The first and outermost layer is made of soft TPU which will help absorb the shock of a drop. In addition, this first layer is co-molded onto layer number two, which is made of a touch impact resistant polycarbonate. Last but not least, the third layer, which is the inner-most layer, is made of a soft silicone. This layer also includes Ballistic corners, which means all four corners have extra shock absorption where you need it the most. This is compatible only with At&T Galaxy S2 and not compatible with At&T Skyrocket phones
^Ballistic SA0735-M375 Samsung Galaxy S II SG Case - 1 Pack - Retail Packaging – Black and Blue, Ballistic. Amazon. UPC 759059007453 (revised Aug 2018)
^Ballistic Pink None Cell Phone - Case & Covers Ap1156-a015, Ballistic. Newegg. UPC 759059007453 (revised May 2016)