Amazon Basics Foldable Octagonal Metal Exercise Pet Play Pen for Dogs, Fence Pen, Single Door, Black, 152.4 x 152.4 x 106.6 centimeters

Indoor/outdoor portable 42-inch play and exercise pen with door; for dogs up to 26 inches tall
Made of durable iron metal with rust-proof black finish; step-through door access; 2 secure-locking slide-bolt latches
8 connected panels, each measuring 42 by 24 inches; creates 16-square-foot enclosure
Sets up in seconds; simply unfold, shape, and connect—no tools required; folds flat for compact storage
Includes 8 ground anchors for outdoor use;