Made from 100% natural rubber, from the tree Hevea Brasiliensis. Conform to Pacifier Safety requirements by European standard EN 1400. Made in Germany. Awarded the top rating by the German magazine Oko Test, the leading eco-testing periodical in Germany. No allergy-causing substances (the protein that on rare occasions can provoke a latex allergy is completely eliminated during production). No artificial coloring. No chemical softeners, Bisphenol-A, parabens, PVC, and phthalates FREE. Softer than silicone. Extremely hygienic because they are molded in one piece, with no joints or cracks where dirt and bacteria can accumulate. Larger shield than with conventional pacifiers, in order to prevent babies from squeezing enough to get into their mouths. Unlike conventional pacifiers, won’t leave marks on baby’s face. Because of their natural quality, should be replaced every 4 to 5 weeks.