Quick Answer

To use your Spectra S2 Plus pump with wearable inserts, attach the CaraCups to the pump tubing, place the cups inside your nursing bra, and pump hands-free. The key is getting a proper flange fit and ensuring the tubing is securely connected to avoid suction loss.

What You Need

Before you start, gather your Spectra S2 Plus double electric breast pump, a set of CaraCups Wearable Milk Collection Hands-Free Inserts, and the tubing that came with your pump. The CaraCups are lightweight, BPA/DEHP-free, and operate on a true-closed system, which means milk stays contained and hygienic. Make sure you have the correct flange size for your body — CaraCups are available in multiple flange sizes, so check the option when ordering.

Common Mistakes to Avoid

The most frequent issue is using the wrong flange size, which can cause discomfort or poor suction. Also, ensure the CaraCups are fully seated inside your bra — if they shift, you may lose the seal. Finally, always check that the tubing is firmly attached to both the pump and the cups; a loose connection reduces vacuum pressure.

Step-by-Step Guide

  1. 1. Assemble the CaraCups: Attach the silicone insert and backflow protector to the CaraCups as shown in the product manual. Ensure the backflow protector is correctly seated to prevent moisture from reaching the tubing. A common mistake is forgetting the backflow protector — without it, milk can enter the tubing and damage the pump.
  2. 2. Connect Tubing to Pump and Cups: Connect one end of the tubing to the pump's air outlet and the other end to the port on the CaraCups. Do the same for the second cup if pumping double. Check that the tubing is pushed on firmly — a loose connection reduces suction and may cause the pump to seem weaker.
  3. 3. Insert Cups into Your Bra: Place each CaraCup inside your nursing bra, centering the nipple in the flange tunnel. Adjust the bra to hold the cup securely against your breast. If the cup shifts during pumping, you may lose the seal. Try a snug-fitting bra or a pumping bra for extra support.
  4. 4. Start Pumping: Turn on the Spectra S2 Plus and select your preferred cycle speed and vacuum level. Start with a low vacuum and increase gradually until you feel a comfortable, effective pull. Don't start at maximum suction — it can be uncomfortable. The S2 Plus's 270 mmHg strength is plenty, so adjust slowly.
  5. 5. Remove and Transfer Milk: When done, detach the tubing, remove the cups from your bra, and pour the milk into your preferred storage container. The CaraCups make transfer easy and sanitary thanks to their true-closed system. Pour milk immediately to avoid spills. The cups are not designed for long-term storage.

Product Facts

  • CaraCups Wearable Milk Collection Hands-Free Inserts: CaraCups are lightweight, BPA/DEHP-free, operate on a true-closed system, and are compatible with all Spectra breast pumps among other brands. This means you can pump hands-free without worrying about spills or contamination, and the cups fit discreetly in your bra.
  • S2 Plus Premier Double Electric Breast Pump: The Spectra S2 Plus double electric breast pump is hospital strength (270 mmHg) and weighs only 3 lbs, making it quiet and portable. The strong suction ensures efficient pumping sessions even with wearable inserts, while the lightweight design makes it easy to carry around the house.