Can't go wrong with this design. The silicone "nub" comes in different sizes for different stages - newborn up to 6 months and 6 months and up. It is very durable and has held up well with my 2 yr old who has taken to chewing some on her paci. My favorite part of this product is the open design in the front. When teething my little one drools a lot and with a traditional paci her saliva builds up around the back of the paci and on her skin. With the open design I don't worry about a rash or redness developing.