The Olababy GentleBottle is an 8 oz bottle with a medium flow, designed for your baby’s comfort. Its off-centered nipple mimics natural breasts for a more natural feeding experience. The integrated dual-venting anti-colic system and smooth texture make it easy to hold and reduce colic. Its wide neck allows for easy cleaning and is made of 100% non-toxic silicone, free of harmful chemicals like BPA, PVC, and Phthalates.