This Puzzelmatten the latest generation are really great ... Was indeed very skeptical because of the years of warnings because of formamide burdens, we have so far to this acquisition omitted.We are very careful with the purchase of plastic articles for our Nachwuchs.Aber Öko Test new version is "good." Our youngest son is now able to "enjoy" finally slipping free to explore our tiled living room. Today -ausgepackt get -and already in Benutzung..von smell no trace. The mats are a little tighter than the predecessor models but is rather another plus. The ribbed side helps the small crawling to better Bodenhaftung..Beide thumbs up !!!