Covered on the outside in heavy duty hard wearing basket weave material lined on the inside with soft but hard wearing thermal Sherpa Fleece and designed to keep your pet warm & comfortable. The thick base cushion (removable for easy separate washing) and the high walls of this bed are filled with bonded Thermal Polyester Fibre to insulate your pet from the cold floor and keep it out of draughts. Designed and Manufactured to be fully machine washable keeping its shape after washing. Available in three sizes - Internal Measurements (For external add approximately 10cm) Size 3 - L 51cm X W 41cm X H 20cm / Base cushion 7 cm thickness Size 4 - L 61cm X W 51 cm X H 22 cm / Base Cushion 7 cm thickness Size 5 - L 76cm X W 64cm X H 24 cm / Base Cushion 8 cm thickness (All measurements given are subject to slight variation due to manufacturing process)