TheBart Simpson Zee.Bed is part of the exclusive + 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. Available in two sizes – Small and Large.