Quick answer

The Spectra Breast Milk Storage Bottle Wide Neck Set gives you wide neck bottles that hold up to 160 mL each, with an airtight cap that has a date marker and an easy-to-read milk scale. They are BPA-free and made for fridge or freezer storage. If you pump with a wide neck Spectra setup and want bottles that are stable, stackable, and simple to label, this set is the practical pick.

What you get in the box

Each set contains wide neck storage bottles, and every bottle holds up to 160 mL of milk. The cap is airtight and includes a date marker, so you can write the pump date directly on the cap instead of hunting for tape or labels. The bottles also have a molded grip shape, which makes them easier to hold when your hands are full or when you are transferring milk one-handed.

How to use them for fridge and freezer storage

Fill the bottle, leave a little headroom if you plan to freeze, and twist the airtight cap on firmly. Write the date on the cap's date marker before the bottle goes into the fridge or freezer. The improved milk scale is easy to read, so you can track how much you stored without guessing. Because the base is larger than older styles, the bottle stands more securely and is less likely to tip while you are pouring or moving it.

Wide neck compatibility and when you need an adapter

These are wide neck bottles, so they match wide neck Spectra pump parts and flanges. If you use a narrow neck pump or a different brand with a narrow opening, you will need a cap adapter to pump directly into them or to attach a nipple. The set does not include an adapter, so check your pump's neck style before you buy if you plan to pump straight into the bottle.

Care and replacement timing

Wash the bottles and caps in warm soapy water, rinse well, and let them air dry. For sanitizing, follow the instructions that came with your pump or use a steam bag or boiling water method you already trust. Bottles themselves generally last a long time if they are not cracked or scratched, but pump parts like flanges and valves are different: Spectra recommends replacing those every 3 to 6 months for optimal performance. If you are replacing a full single-pumping setup, the Wide Breast Flange Set covers the S1, S2, SG, or 9 Plus, and the Breast Pump Air Cap Set is what you need when you switch to single pumping.

Wide Neck Storage Bottle FAQ

Are these bottles freezer-safe?

Yes. The set is designed for fridge or freezer storage, and the airtight cap helps protect milk from freezer burn and odors. Leave a little headroom because milk expands as it freezes. Label the cap with the date before freezing so you rotate older milk first.

Can I pump directly into the wide neck bottles?

They are wide neck bottles, so they attach to wide neck Spectra pump parts and flanges. If you use a narrow neck pump or a different brand, you will need a cap adapter, which is not included. Match the bottle neck to your pump before you buy if direct-to-bottle pumping is your plan.

How should I clean and store the bottles?

Wash in warm soapy water, rinse thoroughly, and air dry. Sanitize using a method you already use for pump parts, such as a steam bag or boiling water, and let everything dry completely before storing milk. Replace flanges and valves every 3-6 months; the bottles themselves last as long as they are not cracked or scratched.

Product facts

  • Breast Milk Storage Bottle Wide Neck Set: Each bottle holds up to 160 mL and is BPA-free, with an airtight cap that has a date marker, a molded grip shape, an easy-to-read milk scale, and a larger base for stability. You can store, label, and stack milk without extra labels, and the wider base means fewer tipped bottles on the counter or in the fridge door.
  • Wide Breast Flange Set: The Wide Breast Flange Set is a single-pumping replacement kit for Spectra S1, S2, SG, and 9 Plus pumps, and Spectra recommends replacing parts every 3-6 months for optimal performance. If you pump into wide neck bottles and notice suction dropping, a fresh flange set restores performance and keeps your bottle set usable.
  • Breast Pump Air Cap Set: The Breast Pump Air Cap Set includes two silicone caps and is for use with Spectra S1, S2, and SG pump models when you want to single pump. Single pumping with a wide neck bottle setup requires capping the unused side, so this small part keeps your session running without losing suction.