New with tag Brand Zara Zara S/S ‘24 collection Midi dress made of satin effect fabric with round neckline and spaghetti straps. Open back. Black / Ecru | 2256/170 OUTER SHELL 100% polyester Which has at least: OUTER SHELL 100% RCS-certified recycled polyester CERTIFIED MATERIALS ROS CERTIFIED RECYCLED POLYESTER Nowadays, recycled polyester is mainly made from PET plastic waste. This is a type of plastic that is widely used in a variety of items, such as plastic bottles. Using recycled materials helps limit the production of virgin polyester fiber. It is certified to the Recycled Claim Standard (RCS), which verifies the recycled content and tracks it from source to final product.