Quick answer
Use the Dr. Brown's Options+ Conversion Kit (8oz/250mL) to replace the bottle's vent system, collar, and cap with the included sippy spout parts. The process takes under a minute and requires no special tools.
When to start the conversion
Most babies are ready for a sippy cup between 6 and 12 months. Look for signs like sitting up with support, showing interest in your cup, or being able to hold the bottle on their own. Starting too early can lead to spills and frustration; waiting too long may make the transition harder.
Why use the Dr. Brown's Conversion Kit
The kit is designed specifically for Options+ narrow 8oz bottles, so the parts fit securely and prevent leaks. It includes a vent insert, reservoir tube, travel disc, collar, and cap—everything you need to switch without buying a whole new cup. Using mismatched parts may cause spills or poor flow.
Step-by-step conversion
- Step 1: Remove the original bottle parts: Unscrew the existing collar and cap from your Dr. Brown's Options+ narrow 8oz bottle. Remove the vent insert and reservoir tube if they are still attached. Discard or store the old parts; do not mix them with the new sippy cup parts.
- Step 2: Install the sippy spout and vent system: Place the new vent insert into the bottle opening, then attach the reservoir tube. Screw the new collar (from the kit) over the vent system, and snap the sippy spout into the collar's opening. Ensure the vent insert is fully seated to avoid leaks. A loose vent is the most common cause of drips.
- Step 3: Add the travel disc and cap: If you plan to carry the cup in a bag, place the travel disc over the spout before snapping on the cap. The disc prevents spills during transport. The travel disc is optional for home use but essential for on-the-go. Without it, the cap may not seal completely.
- Step 4: Test for leaks: Fill the cup with water, screw the assembled top on tightly, and turn it upside down for a few seconds. If water drips from the spout or collar, recheck the vent insert and collar tightness. A quick test saves cleanup later. If leaks persist, the bottle may be overfilled—leave an inch of headspace.
Product facts
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Dr. Brown's Natural Flow Options+ Narrow Baby Bottle Conversion Kit - 8oz/250mL: The Dr. Brown's Options+ Conversion Kit fits exclusively Options+ narrow 8oz/250mL bottles and includes a vent insert, reservoir tube, travel disc, collar, and cap. You get all the necessary pieces in one package, so you don't have to hunt for individual parts or worry about compatibility.
Dr. Brown's Natural Flow Options+ Narrow Baby Bottle Conversion Kit - 8oz/250mL
