A pop of color makes this bed super stylish. But it's not form over function as it's also water resistant, stain resistant and easy to clean. The Fatboy is filled with virgin polystyrene beads to allow for the ultimate lounging experience. Specifications: Depending on the product, Fatboy is made from either a Nylon or Polyester fabric and has a PVC coating. Dimensions: Small 32 x 24.