EFM Seoul Crystal Clear Case Armour with all new Crystalex D3O - The worlds most protective transparent material. Naturally non-yellowing, non-tinting and with a 200% greater dye transfer resistance than conventional TPU materials. The Seoul case provides clarity that lasts. EFM Seoul Crystal Clear Case Armour has an internal geometry pattern that creates miniature air pockets to provide an additional layer of impact protection. It also plays with the light providing an eye catching sparkle. Seoul is 2 meter drop tested, offering 360 degree device protection without impeding or restricting any functions of the device. The stadium screen edge prevents damage from a flat drop or scratches to the screen. For slim but tough device protection, choose Seoul. SLIMMEST | CLEAREST | TOUGHEST.