Breastfeeding is the best for your baby - but when it's not possible, Vital Baby Nurture Disposable Sterile Feeding Bottles can be used to feed your baby expressed breast milk, prepared infant formula, or cooled boiled water in the recommended semi-upright position. Vital Baby Nurture Disposable Sterile Feeding Bottles come in their own sterile, individually sealed pack. They are perfect for outings and travel and to take with you to the hospital when having your baby. They are also ideal when you are leaving your baby in someone else's care. Cleverly designed, the bottle bag collapses as baby feeds so no air gets into the milk. This helps to prevent baby from swallowing air which can cause colic and wind pains. Made from safe Bisphenol-A free recyclable materials.