The Midwest Homes for Pets Exercise Pen is made of Acri-Lock Acrylic Coated Gold Zinc for long lasting protection. It has a secure double latch door access to make your pet secure . Each size Gold Exercise Pen w/ Step-Thru Door consists of 8-24"wide panels for a 16 sq. ft area for your pet. 5 different Pen heights available. Also, this exercise pen is easy to set up and you don't need tools to build this one. It's a versatile exercise pen; you can even have a variety of pets in it. Comes w