Features The Babisil Silbottle contains a flexible silicone inner chamber that is: Soft Silicones natural flexibility mimics the breast lobules, providing an anti-colic feeding experience which is only 'Second to Breast' Safe Used in many medical applications because it is so safe, the Silicone provides an anti-bacterial, Bisphenol-A (BPA) free, oestrogen free milk zone. Simple Dish washable, interchangeable, re-useable, long lasting and easy clean (no need for a brush) and free from complex valve systems. Patent pending design, conforms to EN14350, 2002/72/EC, American FDA authentication safety standards Safety Standard Conforms to EN14350, 2002/72/EC, American FDA authentication safety standards