TRANSPARENT & BREATHABLE: guinea pig playpen is made of durable polyester fabric, surrounded by nets, you could watch your pets at all times, as well as ensure the ventilation of the playpen and eliminate odors. AUTOMATIC OPENING: No need for complex splicing, built in frame pops open in seconds. Folds back flat when not in use for easy carrying and storing. When it is opened under spring pressure, it should be away from children and face. WARM TIPS: It can quickly create an interactive area between owners and pets. It is a place where pets play games. If they are unattended, pets may skip the game fence. We recommend that your pets be monitored at all times. SIZE: Width & Height after expansion 120cm x 38cm, 10sq.ft, use durable polyester fabric, easy to clean. Foldable into a round shape, 24cm x 24cm, suitable for outdoor travel, easy to carry. SUITABLE FOR: Small animals pet playpen, suitable for guinea pigs, hamsters, chinchillas, hedgehog, mice, gerbils, ferrets, squirrel, bunny, reptile or other small animals.