Midi Skirt With High Waist Contrasting Sequin Appliqué Slit Hem,Tonal Interior lining Hidden In Seam Zip Closure OUTER SHELL 100% polyester LINING 100% polyester Which has at least: LINING 100% RCS-certified recycled polyester CERTIFIED MATERIALS RCS 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.