Matières Fécales is a Parisian fashion label founded by Hannah Rose and Steven Raj, who met while studying fashion design in Montreal in 2014. The pair have since spent a decade pioneering their "post-human aesthetic". Their unconventional brand name "captures the beauty and grotesque of the human experience while challenging the glossy facade of a luxury driven culture." The brand made its debut at Paris Fashion Week with its FW25 collection in 2025.