This BOX OF 10 1in PILLOW REST MAT is great! 20” x 46” x 3/4” flat, and 20” x 11” for storage. One of 3 soft foam pieces is twice as thick to provide a soft pillow for nap time. Flame retardant. ..Dimensions:20in x 46in x .75in flat, and 20in x 11in for storage