Nap pads or sleeping mats for preschool or daycare can be expensive, but I found a Kinder Mat at Walmart for $9.97 (you may need to order it). For the cover, I used a body pillow case (I bought a package of two at Target as we have twins). The width fits perfectly, but it's longer than the pad. I sewed the extra material at the top of the body pillow case (8 3/4" from the edge) and used pillow filling to make a small pillow.