These sure don't look like much but they are so very important for our momma dogs and their babies. These Drymate Max Whelping Box Liners help keep our nursery runs clean for moms and puppies. The soft, non-woven fabric is highly absorbent and stands up wash after wash to provide a sanitary whelping area. The waterproof backing prevents soak-through and keeps mat in place giving puppies secure footing.