The Ball Playnest Activity Gym offers three fun stages of play! The gym offers engaging hanging toys, featuring a water-filled teether, mirror for learning reflections and soft plush characters with click-clack beads. The gym also comes with 32 colorful plastic balls that can be secured around the edge of the gym or loose in the gym for play. Mode 1 - Playgym: the colorful plastic balls are secured around the edge of the gym with the gym walls fastened down, creating a standard play gym with hanging toys for batting. Mode 2 - Playgym: the gym walls are up creating a safe and secure place for baby to lay and bat the toys. Mode 3 - Ball pit with hanging toys: gym walls are up creating a ball pit with the balls loose in the gym for play, while the hanging toys continue to be used for batting and practicing motor skills. Mode 4 - Ball pit: gym walls remain up and gym arms are removed creating a proper ball pit for play with the loose colorful balls!