The perfect "nesting" spot for any child interested in exploration color and fun! Great for individual or social play this Mini-Nest Pool is a wonderful place. Comfortably cushioned by four 4" thick soft foam sides. Small enough to easily fit into any preschool or nursery. The bright colors and shiny balls are enticing for any toddler looking for fun! Includes a set of 175 mixed color balls 2.75" in diameter.