The teat is made of silicone. The choice of silicone as a material for the baglet is particularly well suited for the youngest babies. Since a newborn baby’s immune system hasn’t fully developed, newborns require extra high hygiene in order to avoid germs and catching illnesses. A good hygiene includes a good dummy hygiene, therefore a newborn’s dummy should be sterilized frequently, and since silicone is a material with a high heat tolerance it doesn’t get damaged by the many sterilisations that an infant’s dummy necessarily must go through. MAM Start dummies are easy to sterilize in the micro oven - just use the steriliser-box the dummy is supplied with.