It's probably not suitable for dogs with joint problems, as its soft design can make it difficult to get up from, but younger dogs will love it. (thedogclinic.com)
You can also look out for dog foods that are specifically designed to help dogs with joint problems. (animalso.com)
Still, even elderly dogs with joint problems benefit tremendously from walks; you just have to take care that you know how far to go. (softpaws.com)