Plasticbank®Clinically Proven To Reduce Colic, Spit-Up, Burping And Gas 1 Pediatrician Recommended Baby Bottle In The USANarrowStage 1 BPA FreeBy Handi-Craft™ Contents: 3 - 4 oz/120 ml bottles3 - Level 1 silicone nipples1 - Cleaning brush / Instructions A sustainable bottle for a sustainable world.  Our bottle is designed to nourish through all of baby's feeding stages and is recyclable. Our breast-like nipple shape encourages a proper latch for a more natural bottle-feeding experience and eases the transition from breast to bottle and back again.  Choose the right nipple.  Made of super-soft, high-grade silicone, each nipple level provides a consistent flow rate. Simply the best baby bottle.™ Dr. Brown's bottles are known for reducing colic, spit-up, burping and gas, resulting in a more comfortable feeding experience for baby. Vacuum-free feeding is closest to breastfeeding and Dr. Brown's nipples provide a consistent flow so babies feed at their own pace. The anti-colic internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night's sleep. Use with or without vent.  Vent system is proven to:  Reduce colic Preserve vitamins Promote better sleep Support breastfeeding  Remove vent  Baby feeds freely No need to introduce a different bottle Designed to grow with baby