The Kit contains a 150mL and another 260mL Nature Sense Bottle, a size S teat (for breast milk, teas and water) and another size M (for formula milk) compatible with both bottles and a Nuk pacifier. The Nature Sense Baby Bottle with silicone teat from Nuk is a baby bottle that aims to provide a sensation of natural breastfeeding for the baby. The teat made of soft, odorless and tasteless silicone has several small holes inspired by the mother's breast ducts to ensure a smooth and natural flow. It features a wider and more flexible shape to support the baby's lips and an anti-colic valve that prevents air intake during the baby's feeding. The bottle was made of high quality, high temperature resistant polypropylene, free of BPA.