The American Academy of Pediatrics and the World Health Organization recommend that babies should be breastfed for a year or more. At Klean Kanteen, they feel breastfeeding is naturally best for babies, mothers, families, the environment and our communities. But they also understand that with working parents, daycare, busy schedules, and other situations, full-time breast feeding may not always be an option. Baby bottles are sometimes necessary to feed babies breastmilk or formula. Kid Kanteen Baby Bottles provide a safe, eco-friendly alternative to plastic. As a new or expecting parent, you've got a lot of decisions to make. Some are small. What color should you paint the nursery? How many onesies should you buy? Others are big, and directly affect your baby's health and development. Whether you breastfeed, use formula, or choose a combination of both, Kid Kanteen Baby Bottles are a healthy, toxin-free, environmentally friendly bottle. They allow natural-paced, relaxed feedings and promote proper digestion and development. Made from 18/8 food-grade stainless steel that doesn't retain flavors, these bottles are free of BPA, phthalates, and other toxins. The contoured, hourglass shape is designed for small hands, and the wide mouth allows for easy cleaning, pouring and filling. The medical-grade, silicone nipple is more than 2 inches in diameter at the base and has variable thicknesses so it feels more like the real thing. As your baby sucks, the long nipple adjusts, mimicking the way a human breast reshapes during breastfeeding, ensuring proper placement in the mouth, and promoting correct oral development and healthy teeth. The nipple also features a double venting system, designed so your baby is swallowing liquid, not air, helping reduce colic and promoting healthy digestion.