Bloom Luxo Sleep Mattress Protector - Natural Wheat100% organic cottonunbleached & undyed natural cotton cover - natural sleeping surface for babytreated with waterproof membrane that also allows airflowmachine washablesnugly fits around mattress top and edgesgently curved ends cocoon sleeping baby53.25" L x 27.75" WNote: This will not fit standard size baby mattress pads.