SILENTNIGHT QUILTED MATTRESS PROTECTOR. SILENTNIGHT QUILTED PILLOW. Filling: Hollowfibre Silentnight Quilted Deep Mattress Protector in Single, Double and King sizes. Silentnight have added a soft hollowfibre quilting to this mattress protector, so it adds a superb layer of softness, and it's finished with an easy-care polyester cotton cover.