The Aura offers more than sleek modern styling. Quick release crowns (QLC™) and a cushioned liner system (2-CUSH™) are engineered for rigidity and impact protection. The Tough-Luxe™ durable coating will keep your Aura case looking fresh. QLC™ Quick Lock Crown System. Removable positive-locking crown system provides secure attachment with quick and easy installation Tough-luxe™ Finish. Premium soft-touch satin plus high gloss custom coatings keep Aura looking sharp. 2-Cush™ Liner System. Elastomeric liner materials (Co-molded TPU, E-TECH™ foam) to suspend and cushion the iPhone for superior drop protection. Fast Tap™ Buttons. Integrated buttons protect iPhone controls while providing quick and easy use of volume and on/off functions.