Polybags are the ubiquitous packaging of the fashion industry – something that unites brands small and large, from sportswear to luxury, to fast fashion retailers. This is the clear plastic bag which covers every garment from manufacturing to retail stores or consumer homes. In some cases, it is removed before it gets to a consumer, but polybags are still present ‘behind the scenes’. Our report does not focus on other sources of plastic, including retail shopping bags or ecommerce mailers, which have been covered in other publications.