The CuteSip Baby Bottle is designed to provide a safe, comfortable, and soothing experience for both baby and mom. This food-grade certified stainless steel bottle is perfect for dispensing breast milk or formula. All CuteSip bottles are BPA free, phthalate free, lead free, contain no sharp edges, and are made of solid 18/8 stainless steel. No interior liners will degrade, affect flavoring, or have an aroma after multiple uses. The universal silicone nipple is BPA free and interchangeable with standard baby bottle nipples on the market, providing additional options for your baby. Your child is constantly changing, but your bottle doesn't have to! With CuteSip bottle attachments - including the easy to use Transitional Sippy Spout Top for babies transitioning from nipple to sippy, the Spill-proof Sippy Spout Top recommended for children two years and older, and the Sports Top for the big kids - your CuteSip bottle transitions to accommodate the different stages of your child's development, ultimately saving you time and money. Perfect for a parent on-the-go, CuteSip bottles are designed to accommodate 12 ounces (355 ml) of liquid, maintain liquid temperature up to 4 hours and stay leak proof thanks to the free transparent LeakProof cap. Best of all, CuteSip Baby Bottles are easy to clean. After a long day there are no small holes, tricky spots or "wash by hand" directions. Just throw the bottle, lid and nipple in the dishwasher for a thorough clean! The fun colors yet chic patterns are designed to attract kids and satisfy any style-conscious mom. All CuteSip bottles can be gender specific, as well as providing a unique look for each child.