Midwest small pet playpen is one of the best play pens and exercise pens for your small pets especially for hamsters gerbils guinea pigs and other non jumping small animals this playpen also considers the safety and convenience of your pets while they are playing the midwest small pet playpens are safe and expandable and made from durable and rust free materials itrsquos easy to set up and you do not need any tools or pieces for connection in building it folds flat for easy storage and t