Exercise Pen with snaps is of durable construction. All Play Yard pens have a zinc electroplate finish added after welding to reinforce protection and increase the pen’s value. Folds flat in either direction, so it takes up less space and sets up and breaks down easily. – NEW DESIGN – Bolt snaps allow you to attach an exercise pen to your crate – Convenient door design opens with 1 handle. No exposed screws, wires or pins to injure your pet.