This yellow back cover for iPhone 11 from Case-Mate is crafted in TPU and plastic material. It features special rubber coating on outside - gives soft, smooth & silky touch feel impact resistance - to protect the phone from accidental falls, flexible wrap around design - protect the curve screen, open ports & closed knobs - gives complete access to all ports & controls and micro fibre covering inner side - keep device scratch proof. Customer Care Number: +919699035006; Customer Care E-mail ID: support@stuffcool.com