Material used: 5 layer excellent quality corrugated kraft paperboard; Material feature: pet and eco-friendly, recyclable and safe for puppy to live, rest and sleep;Paperboard bursting strength: 295psi; edge crush test: 12000N/m, sturdy and strong enough for puppy to play inside;Paperboard flute type: EB;Fashionable design, with cute printing, bone shape vent on back panel; Specially for indoor use; Come flat packed with manual instruction in, easy assembly just need 3-5 minutes.Product size: W28*D20*H24 inches Weight: 6LBS