Dr. Brown's Storage/Travel Caps x2

DR. BROWN'S STORAGE/TRAVEL CAPS 2s Keep bottle contents safe. Take the Wide-Neck Storage Travel Cap along with your bottle wherever it goes to keep the contents safe and secure. Simply remove the nipple, collar, and internal vent system, screw on the Storage Travel Cap, and you’re done! Use pumping, when transporting, and when warming Use when traveling by air to prevent effect of pressurized cabin on the Dr. Brown’s vacuum-free bottle BPA free