Playpens are a great place for babies to practice sitting, rolling over, crawling and standing, as well as playing independently, providing a safe place for babies to play.
Playpens have a sturdy frame, breathable mesh sides, and a base with a padded mattress. They usually fold up easily and are easy to move from one room to another.
Most playpens even come with a convenient storage box, so you can pack it up and take it with you for visits to grandma, vacations, and other places that are not fully babyproofed.