The invention relates to a removable seat cover (15), particularly for a vehicle seat, the cover (15) comprising a set of interconnected panels (45) that are foldable, the cover (15) being designed to be placed between the seat (10) and a user when unfolded, the cover (15) being designed to be folded by folding the panels (45) together, comprising a support portion (50) formed by one or more panels and configured so that a user can rest their head on it. The cover (15) has two lateral portions, each comprising one or more panels and extending from a lateral end of the support portion (50), the two lateral portions having means for securing their free ends to each other and being configured to support the user's head when their free ends are joined.