A4pet 29" Portable Pet Play Pen Dimension: 29" (Diameter) x 15" (Height) Folds completely flat for easy storage and portability Portability makes it ideal for indoor use, outdoor use, camping trips or road trips Each Soft Side Play Pen has eight fully ventilated mesh panels for your pet breath fresh air and for you check on your pet Zippered front door and removable top can be left open for easy access or closed for containment