The Nuby TMSoftFlexTMBreast size teat closely mimics the mother"s breast and is really "at the core" of the whole feeding program. The soft feel and natural shape of this Natural TouchTMteat gently flexes and elongates like mom"s breast. This allows your baby to position the teat at the correct angle for feeding and mimic the natural action of breastfeeding. This greatly helps ease the transition from breastfeeding to bottle feeding. The SoftFlexTMteat features 3 superior valves in the base of the nipple to help prevent colic, as well as soft nubs on the surface that massage your baby"s gums. Nuby comes to you from the USA and is one of the World"s Leading Brands in infant feeding, teething and drinking products. Recently launched in the UK Nuby has won numerous prestigious awards including Mother&Baby, Practical Parenting and Prima Baby for Newborn Feeding, Drinking, Teething & Toys which are all independently tried and tested and voted for by parents themselves. Box Contains. 2 Medium flow teats. Product Description. 0 months + 2 teats wide neck. With its average flow and pleasant texture, baby take full advantage of his bottle of milk! Small spikes on the shield that massage and stimulate gums. Anti-colic, which prevents air ingestion. Specifications: At birth. silicone. 0% Bisphenol A.