Winner of the mums choice best baby bottles brand 2015 six pack of closer to nature bottles the teat is designed to mimic the natural flex and feel of a mums breast with super sensitive valve and soft natural feel silicone teat easy hold bottle with a slow flow teat bpa free for total reassurance the unique extra wide teat on all of our closer to nature bottles works beautifully just like mum authentically flexing and stretching to mimic the natural look and feel of mums breast makin