Thank you for viewing! (^^) How about this for a replacement for your easily soiled futon? ✽Size✽ Overall... approximately 30cm x approximately 20cm Rubber bands for securing the heater are attached to the back. Quilt batting is used for the bottom fabric. Please be careful if it tears or gets holes. This is a handmade item, so there may be some slight imperfections and wrinkles. We appreciate your understanding before purchasing. m(_ _)m