[Safe and Secure]: Our sturdy dog play pen is manufactured with strong steel wires, quality scratch-resistant oxford cloth and durable mesh. Together with auto self locking zipper to help keep your pet safe and sound in there. Size L:49.0”L×45.5”W×24.0”H, fit for large and Medium dogs(Within 24”L×19”H); Size M:39.5”L×36.0”W×20.0”H,fit for small and medium dogs(Within 17.7”L×12.2”H). [Excellent Ventilation and Visibility]: 360 degrees open view and strong enough with breathable mesh sides make sure your pup gets fresh air and feels more relaxed. And the top of dog play pen is removable by zip,so you always keep an eye on your pet while driving or traveling. [Convenient Cleaning]: The zippered top of this dog play pen can be removed for easy cleaning. Besides, the bottom is water-resistant so liquids won't leak through to make a mess of your room. Door can be opened by two-way zipper and rolled up and fixed to prevent pets from biting the door.