Amazon.com: The Heavy Duty Cotton Ektorp 3.5 Seat Width: 98" (Not Regular 3 Seat) Sofa Cover Replacement is Compatible for IKEA Ektorp Three and Half Sofa (Dark Gray) : Home & Kitchen
Ektorp 3-seater sofa bed cover (for model on sale in Ikea since 2013), light grey, 704-11, 218 x 88 x 88 cm - Dekoria
EKTORP 3-seat sofa-bed - which model do you have? - Soferia | Covers for IKEA sofas & armchairs