Dr Brown’s Options+ 270ml twin back Anti Colic bottle is clinically proven to reduce windy colic in young babies using its 100% vacuum free vent.  They are an easy and effective way to feed your little one.  Their unique bottle can be used with or without the internal vent system.  It is known to be very breast like to encourage a more natural feeding experience as well as helping with digestion making sure your little one sleeps well.