The Dri-Tec® Performance® Sofa Bed Mattress Protector is specifically engineered to provide a flexible, secure fit for sofa beds while creating a comfortable night for guest sleepers. Its stretch skirt fits mattresses up to 4” high, preventing the protector from getting caught in the sofa mechanism. Dri-Tec® technology wicks away moisture to create a dry and cool sleeping environment. And the noiseless waterproof barrier helps keep the mattress clean so your guests can rest easy.