Provide your pup with a luxurious place to lounge! Best Friends by Sheri Velvet CertiPur Orthopedic Nap Mat Dog Bed has a cozy velvet exterior and a foam wave, orthopedic interior. The high-density mattress allows for even weight distribution to support joints, making this bed paw-fect for older pets. The unique foam wave not only offers comfort and support, but it also helps to trap cool air in during the summer months and warm air in during the winter months! And you can rest easy knowing that it,s made without heavy metals and formaldehyde.