This Closer to Nature glass bottle magically transforms into a drinking cup and storage jar. Glass is chemical free, odor and stain resistant, long lasting, and easy to clean, which makes it an ideal material for baby feeding. Like all our Closer to Nature baby feeding bottles, this one comes with a unique breast-like nipple that flexes and feels just like mom, which makes switching between breast and bottle feeding a stress-free experience. Features: -Includes 3 glass bottles, 3 cup rings ans 3 jar lids -Chemical free glass bottle is naturally odor and stain resistant, easy to clean and free from BPA, phthalates and toxins -Bottle transforms into an open feeding cup and storage jar to prolong its life -Smooth silicone nipple with breast-like shape for a natural latch -Anti-colic valve in nipple to reduce air ingestion -Made with Medical grade borosilicate glass (equivalent properties to tempered glass) these bottles are Durable, thermal heat resistant and shatter resistant -Easy to clean and sterilize -It starts as a glass baby feeding bottle, and when your baby’s moved onto solid foods, you can transform it into a cup and storage jar. Simply add on the special adaptive screw rings to prolong its life by using it as an open cup for baby to drink from or a handy storage jar. -The baby safe glass bottles are made from premium borosilicate glass which is BPA, phthalate and toxin free. Glass baby bottles are also naturally stain resistant and easy to clean. The glass bottle is made from sustainable, long lasting material, plus it can be recycled after use too.