Insect Shield 37 by 24-Inch Dog Ex by Pen Insect Shield Fabric Ex Pen offers effective and odorless protection from a wide array of pests Folds completely flat for easy storage and transport Mesh windows offer increased ventilation, while side pockets provide additional storage Features stake loops and metal stakes to firmly hold the pen in place, a removable fabric bottom, and a removable mesh top Veterinarian approved by Dr. Katy