We have this "pool balls"; 0) given to our son (11 months) for Christmas. A great success! The tunnel was / is a hit and our little one loves power "Guckguck" to play at the tent by the above attached (ventilation): 0) The only drawback (hence only 4 stars for the product) was of course the number of supplied Balls - viiiiiiiel too little for real balls pass! We have again 300 pcs. Ordered it and now it's a real immersion in the colorful splendor! Also makes mom and dad great fun! : 0) Absolute buy recommendation!