Calming donut bed with removable cover is recommended for dogs who like to burrow or curl. The raised outer bolster provides a sense of security as well as a place for your pet to rest their head. Bolstered sides and center pillow unzip for easy washing. Durable upholstery grade fabric. Removable bolster and cushion cover SMALL: Outside ⌀50 cm MEDIUM: Outside ⌀70 cm LARGE: Outside ⌀90 cm