Lansinohs mOmma Glass Feeding Bottle 240ml with NaturalWave Teat has been specially designed so that your little one can enjoy your expressed breastmilk even when youre apart.Glass is the most inert material used for baby feeding bottles. There is no molecular transfer of any kind between the contents and the feeding bottle itself which makes it easier to clean and sterilise. The Lansinoh glass feeding bottle is made from a special type of material called borosilicate glass. Borosilicate glass is less dense, more resistant to thermal shock and often used in laboratories. Its also better for the environment as its 100% eco-friendly and 100% recyclable. Based on more than 50 years of research, the NaturalWave teat promotes your babys instinctive sucking action for natural oral development, which helps you switch easily between breast and bottle so that you can maintain your established breastfeeding patterns. Extensive research has revealed that a babys sucking style is very different to an adults and involves three key steps. These are the initial latching on, the peristaltic tongue movement (in which your babys tongue moves in a wave-like motion), and swallowing. It is very important that a baby is able to perform the peristaltic tongue movement as it encourages natural oral and jaw development. Lansinohs NaturalWave teat is clinically proven to encourage this natural feeding pattern.