Backed by over 60 years of research into baby's natural sucking behaviour, the new upgraded Pigeon SofTouch Nursing Bottles, comes with research-based latch-on line for appropriate latching and even softer nipple that is closest to mother's breast. Developed to functionally mimic the feeding movements that babies perform when drinking from mum's breasts, SofTouch Nursing Bottles are crafted to especially support breastfeeding mums to feed their baby from both breast and bottle seamlessly. Anti-colic with advanced air vent system that minimizes swallowed air as baby drinks. Bottle is made from PP material (Polypropylene), and is durable and light-weight.