Travel Caps for Baby Bottles: Why You Need Them
By Dr Browns | Published: 2026-10-19
Category: Buying Guides
Travel caps keep bottle contents safe and prevent leaks during travel. Learn which Dr Brown's travel cap fits your bottles and how to use them correctly.
Quick answer
If you travel with a Dr Brown's bottle, a travel cap is essential to prevent leaks and keep the bottle contents safe. Choose the cap that matches your bottle neck size: wide neck or narrow neck.
Why use a travel cap instead of the regular nipple and collar?
A standard bottle assembly includes a teat, collar, and internal vent system. When you're on the move, that assembly can leak, especially during air travel where cabin pressure changes. A travel cap replaces the entire feeding assembly with a simple screw-on lid that seals the bottle securely.
Dr Brown's travel caps are designed to work with the brand's vacuum-free bottles. They are not universal lids for other bottle brands. Using a travel cap also protects the bottle's threads and keeps the interior clean between feeds.
Wide neck vs narrow neck: what's the difference?
Dr Brown's bottles come in two neck sizes: wide neck and narrow neck. The travel caps are not interchangeable. A wide neck cap will not fit a narrow neck bottle, and vice versa. Check the bottle's packaging or measure the diameter of the bottle opening to confirm which size you need.
The wide neck cap comes in a pack of 2, while the narrow neck cap comes in a pack of 3. Both are BPA free and suitable for travel, including air travel.
How to choose the right travel cap
- Identify your bottle neck size: Look at the bottle's packaging or measure the opening. Wide neck bottles have a larger diameter than narrow neck bottles. The cap must match exactly.
- Consider how many caps you need: Wide neck caps come in a pack of 2. Narrow neck caps come in a pack of 3. If you typically prepare 3-4 bottles for a day out, the narrow neck pack gives you more caps per purchase. If you need more than 2 caps, the narrow neck pack may be more economical.
- Use the cap correctly for air travel: Remove the teat, collar, and internal vent system before screwing on the travel cap. This prevents pressure changes from causing leaks during flights. Always remove the full feeding assembly before using the travel cap on a plane.
Product facts
- Dr Brown's Travel Caps - Wide Neck Only: Pack of 2 wide neck travel caps. Simply remove the teat, collar, and internal vent system, screw on the cap, and you're done. You get two caps per pack, which is handy if you prepare multiple bottles for a trip or need a spare.
Dr Brown's Travel Caps - Wide Neck Only - Dr Brown's Travel Caps - Narrow Neck Only: Pack of 3 narrow neck travel caps. Designed to prevent the effect of pressurised cabin on the Dr Brown's vacuum-free bottle. Three caps per pack give you extra coverage for longer outings or for storing pumped milk in multiple bottles.
Dr Brown's Travel Caps - Narrow Neck Only
Which cap is right for you?
Best for
- Parents who travel frequently with Dr Brown's bottles and need a leak-proof seal
- Parents who want to store prepared formula or pumped milk in the bottle without the feeding assembly attached
Not for
- Bottles from other brands (Dr Brown's travel caps only fit Dr Brown's bottles)
- Bottles with a different neck size than the cap (wide neck caps only fit wide neck bottles, narrow neck caps only fit narrow neck bottles)
