1. Generation with Detachable Bottom --- The bottom of the pet playpen can be removed, so that the small animals are closer to nature when used outdoors. The removable bottom can be used as a sunshade cover on the top of the cage to provide additional sun protection. 2.Extra Large Space --- Measuring 185 x 94 x 64cm / 73 x 36 x 25 inches, this animal playpen is large enough for multiple dogs, cats, rabbits and other small animals. Pets can exercise in the playpen while preventing small pets from running around. 3.4-Opening Design --- The small animal playpen is with 4 zipper doors, two on the top and two on the side. It is convenience for the entry and exit of animals, and in the meanwhile, you can supplement food and water conveniently. No complicated assembly is required. When you use it in the outdoors, it can be fixed with 8 ground nails provided. 4.Both Outdoor & Indoor Use --- The breathable mesh fabric of the guinea pig cage provides better ventilation, keeps your pet closer to nature and protects them from annoying bugs when used outdoors. Indoors the tent is ideal for dogs, cats, isolating an injured pet, or introducing a pet. Suitable for raising chickens, ducks, rabbits and other small animals.