nylon Imported Made of polyester,smooth, soft and anti scratching.The cat paly tent light weight and sturdy. Cat play cube will provide your cat with hours of play time The cube have a play tassel inside and can even be attached to other cubes for more fun This cube is most suitable for small or medium size cats or small puppies ( please see the measurement before place order) It can be easily connected to additional cubes Made of polyester . Cubes measured: 38cm x 35cm x 40cm / 15"x14"x16" (L x W x H) . The hole diameter approx.: 20cm / 7.8” . Note: The cat tent is light weight , the cat tent may broken if your pet scratch it. It can be easily connected to additional cubes .Folds completely for easy storage Includes play tassels on the inside of the cube .Package: 1 x cat tent + 4 x balls + 1 x user manual .