Eight connecting panels let this pen take the shape a room or a lawn actually allows, whether that is a rectangle down one wall, a square in the middle of a garden or an octagon around a whelping area. It is built to hold determined animals: eight 3.9 inch ground stakes anchor it outdoors, sixteen tension straps hold the panels tight, and two gate latches with a carabiner clip defeat the paws that work simple catches open. Both the bottom mat and the top cover are 600D Oxford fabric, waterproof and washable, with half the top in mesh, so the mat protects flooring while the cover stops jumping and shades a pen in the sun. The whole thing folds flat without tools in about five minutes for travel or camping. It suits small to medium animals rather than large working breeds.