Every top joint is wrapped in anti-collision foam, and the panels fit without gaps that could pinch fingers; those two details define this 59 x 59 x 30 inch square playpen. The metal frame uses 1 mm thick tubing under gray oxford fabric, with 360 degree see-through mesh so a child never loses sight of you. A 47 x 21.5 inch side door zips open for a toddler to walk in and out, and 4 pull-up rings plus 50 ocean balls come in the box. No assembly is needed: unfold it and it is ready. The pen weighs 16 lbs and folds down into the included carry bag. It is intended for children from birth to 3 years, whether crawling across the floor, pulling up on the rails or walking through the gate, and it works in a living room, a nursery or a grandparent's house as a contained play zone.