The Eco Nap mat fulfills every need for your dog or cat while being low maintenance and earth friendly. The fabric is made with 85% IntelliLoft recycled fibers, while the added layer of support batting is comprised of 50% recycled long-staple IntelliLoft fiber fill. IntelliLoft fiber is made from recycled plastic bottles. Easy, simple one piece machine wash and dry. Everyone will want one. Made in Montana. XSmall - 19x14x2 (using 9.87 bottles); Small - 24x19x2 (using 14.64 bottles); Medium - 28x20x3 (using 21.31 bottles); Large - 35x22x3 (using 26.45 bottles); and XLarge - 41x28x3 (using 40.92 bottles).