Petkit deep sleep pet mattress pet bed cover replacement grey - m the petkit deep sleep mattress cover is a perfect match for petkit deep sleep pet mattress pet bed - m. It comes with pet friendly polyester and non irritating materials. Machine washable with cold water easy to clean and maintain material 100 polyester pet friendly fabric cover non-irritating material removable and durable item dimensions approx 55 x 70 x 12.5cm includes 1x mattress cover - grey please note mattress not included