It's made of flexible thermoplastic polyurethane (TPU). It provides protection from UV rays and has undergone an anti-aging treatment.
Shock Absorption Technology:
Constructed with durable TPU fusion to offer full protection all around the device.
Featuring two layers of protection: a shock-absorbing frame that protects against drops, and a solid body that protects against scrapes, bumps and more.
Secure drop protection:
Excellent protection and grip with flush buttons; maintains the minimalistic look of the iPhone 6 making it the obvious choice in clear and comfortable protection.