Flexible two-way stretch skirt allowing the protector not to get caught in the sofa mechanism., Clean and Healthy Sleep - Built for Protection - Noiseless waterproof barrier maintains a clean and healthy sleep environment., Secure Fit - A Secure Fit That Won’t Slip - Our lightweight protector is designed to securely fit your sofa bed’s mattress for a smooth fit that never bunches., Machine washable and can be placed in the dryer., iProtect Sofa Bed Mattress Protector is specifically designed and engineered to provide a flexible, secure fit for sofa beds while creating a comfortable sleep environment for guest sleepers.