Green Black OEM Trident Aegis Hard Silicone Case w Screen Protector For HTC Thunderbolt The Aegis offers complete protection with creative design to keep the Thunderbolt safe and unharmed without compromising its advanced functionality. Unlike Trident Case's other series of cases, with the Aegis the silicone layer is on the inside - in direct contact with the Thunderbolt - with a hard polycarbonate shell on the outside. This design gives the case a unique look and feel while maintaining The Aegis for Thunderbolt comes with a scratch and smudge-resistant screen protector keeping the screen safe without sacrificing responsiveness. The four corners of double-thick silicone insulate the Thunderbolt from everything including light bumps to violent drops with a unique shock-absorbing design. Multi coated rubberized finish lavishes the Aegis with velvet touch and sleek look