Description Sophie la Giraffe feels that they needed to take an Eco-responsible approach in mind, they have decided to give a second life to rubber trees (Hevea) used for the production of natural rubber. Rubber wood is soft and resistant. No chemical treatment has been added, which makes it a perfect combination with their natural rubber. The Rattle has received the “OK bio-based” certification provided by the independent laboratory TUV Austria. The rattle obtained 4 stars certifying a 100% bio-based material composition.