The Bart Simpson Zee.Bed™ is part of the exclusive Zee.Dog + The Simpsons collaboration. This limited edition memory foam dog bed with orthopedic support is made of our super comfortable unibody viscoelastic foam. The removable, ultrasoft microfiber cover makes it even better: anti-scratch, soft on fur and perfect for all types of dogs. What makes this limited edition Simpson bed even better? A non-slip rubber base that keeps it in place.