Dr Browns Transition Cup The Best way to help baby make the easy transition from bottle to cup Sturdy, contoured handles that make it easier than ever for little hands to get a comfortable grip. Cleaning - bringing the water to a rolling Boil, then turning the heat off and leaving the bottle parts in the water for 3-5 minutes One-piece, spill-proof silicone spout valve that makes sipping easy for tiny mouths, and is also removable for easy cleaning Attached lid stays open when baby drinks and keeps spout clean when not in use Easy to assemble and clean and is dishwasher safe - 6 ounce /180 ml. - Recommended for babies 6 monthsplus