The single sided fleece is perfect for protecting your furniture and car seats.  Our Dogs love them as an extra cushion and pillow on top of the double sided fleece bed.   Our fleece wicks moisture so it stays dry on top.  We highly recommend the single sided fleece for whelping boxes.  There is lots of cushion for the puppies to get great footing and since you can bleach, it helps to maintain the cleanest environment possible for your litter.