Thinklink Flexible Soft Gel Tpu Silicone Rubber Skin Slim Back Case Cover For ASUS Zenfone 6 Travel Hotel Signboard Mail Stamp Design Made of soft gel Black TPU. Shock-absorbing, skid-proof, anti-scratch, tear-resistant. Against Grease, Cracks, Scratches Abrasions and drops. You can remove and fix the case without tools. Access to all ports and funcations without taking off the case.