The mam silk teat feels completely familiar with a proud 94 acceptance rate and is designed with a symmetrically shaped teat meaning they are always in the right position because babies grow quickly mam soothers come in three different sizes that are ideal for healthy jaw and teeth development packed in the convenient steriliser box these mam soothers are great for parents on the go as they can sterilised anywheremarket research 2010 2014 tested with 1 236 babies