Top-grade UV-resistant material offers long-lasting anti-yellowing effect. The AIRBARRIER back cover leaves 0.3mm space between the case and the phone to safeguard your phone from shocks and drops. AIR-SHIELD corner design. Each corner corved by 3 AIR-SHIELD,Impact resistant and offer security to your phone. Certified with MIL-STD-810H drop-tested protection. Composite hard and soft materials create better touch and protection.