Dolio by Naef, wooden toy Size: Length 13cm, Color ball diameter 2cm, Central axis diameter 2.5cm Manufacturer: Naef Country of Manufacturer: Switzerland Age Range: 0 years and up Details: Dolio has been a long-selling product for over 40 years and is loved worldwide. The five brightly colored balls stimulate a baby's curiosity, and they can be used as a teether, with the baby licking the balls or putting them in their mouth and pulling on them. The paint is safe even if licked, so it is safe for babies to put in their mouths. The structure is such that when one ball is pulled, the other is pulled to the center, and the knot of the string is designed not to come out. Also, when shaken from side to side, the sound of the wood hitting each other makes a gentle sound.