To use Drop-Ins® Liners:

1. Open package at perforated circles at the bottom, remove liner.
2. Place liner into Nurser and fill.
3. Pull nipple through retainer ring and screw onto Nurser.
4. Discard liner after single use.

Playtex offers the Drop-Ins® Breast Milk Storage Kit, which is freezer safe.  This will allow you to pump, store and feed using a Drop-Ins® liner.

• When pumping is completed, remove the breast cup and pump adapter from the liner ring.
• Screw the sealing cap onto the liner ring to seal the breast milk inside the Drop-Ins® liner.
• Set the sealed breast milk upside down inside the freezer or refrigerator for storage.  This keeps the filled liner stable on your shelf. 
• When you are ready to feed, remove the breast milk from the freezer or refrigerator.  Screw the sealed liner onto a Playtex® Nurser holder.  The liner ring will screw onto the holder for your convenience.
• Thaw in refrigerator or by running under warm water. 
• Remove the sealing cap and replace with a nipple and nipple ring.  Now you are ready to feed your baby

Without the Drop-Ins® Breast Milk Storage Kit:

• For Drop-Ins® liners, we recommend securing the top with a rubber band or twist tie.
• For standard liners, we recommend double-bagging and securing the top with a rubber band or a twist tie.
• Set upright in the freezer.
• Thaw in refrigerator or by running under warm water.

No, it is not necessary since the Playtex® Drop-Ins® Liners and standard liners collapse and contract just like the breast to deliver nourishment, not air.  Playtex® liners are made of a flexible plastic that will mold to the liquid as the baby feeds. Because of this, air will not get through to the baby’s mouth, nor will a vacuum form, which can cause baby to suck in the air around the nipple. However, we are aware that many consumers want to expel air. There is no problem with doing this; but, we advise that you do this carefully, without the use of sharp objects, so you don’t cut the liner.

If you are using the new expandable Drop-Ins® liners in your current Nurser system, use the liner for ounce/mL measurements, not the holder.  Our new holders have updated ounce/mL markings to match the expandable 10oz liners.