Simmons Beautyrest Cotton Mattress Pad with "Expand a Grip" Cotton Size: Extra Long Twin - Color: White Simmons Beautyrest Cotton Mattress Pad with "Expand-a-Grip" that hugs the mattress instead of you. Guaranteed! Exclusive Expand-A-Grip construction holds pad firmly to your mattress. Plumply filled with fortrel polyester fiberfill and our thread stitched quilting provides years of performance. Guaranteed to fit any mattress from a sofa bed to a standard or extra deep premium mattress. Manufacture "Full 7 Year Warranty"! Extra Long Twin. Material Content: Top: 100% Cotton Back: 100% Polyester Skirt: 100% Polyester 15" Expand-a-Grip