... MaterialPVCAdvantageA. It is environmental friendly ,non-toxic ,safe for the childrenB .The color will never change ,it ... psycholoy.with solid quality,it can be used for many years . it has the function of ... unfade. and this product has a wide use ,for instance:school,kindergarten,villa,amusement parks ,garden,parks ... ,kids hall,and so on. it was designed for the children between 3 and 12 years old. ...