Medela® CSF Bags

by Medela

Product Features

• Medela's CSF Bags are used to collect, store and freeze expressed breast milk
• The bags are presterilized for maximum hygiene and they attach directly to any Medela breastshield so you can pump right into the bag
• A built-in pouring spout can be torn open when it's time to empty the bag
• The area for labeling each bag is outside the milk chamber to protect the purity of the milk
• 50 per pack

Product Details

• Shipping Weight: 6.6 ounces
• ASIN: B000056JEG
• UPC: 020451870106
• Amazon Best Sellers Rank: #35,918 in Baby (See Top 100 in Baby)
  • #96 in Baby > Feeding > Breastfeeding > Breast Pump Accessories
• Average Customer Review: 2.5 out of 5 stars  See all reviews (98 customer reviews)

Product Description

Editorial Review

Being able to collect and store expressed milk for future use can be a great convenience and timesaver if you've chosen to breastfeed your new baby. For mothers who are using a manual breast pump, this pack of 50 CSF breast milk bags from Medela makes that process very simple. The bags are easy to work with: simply peel apart the top of the bag, insert a twist tie through the prepunched holes, and place the bag around the collar of the breast pump. After pumping and filling the bag and squeezing the air out, the top of the bag can then be folded over the twist tie to the level of the milk. By pulling the ends of the twist tie together you now have a neatly packaged serving of nutritious breast milk. The bags are puncture-resistant and sturdy enough for the freezer, and they come with measurement indicators in ounces and milliliters and a label where you can record the date and time you expressed the milk. Fifty twist ties and instructions are included. --Chris Burns

Product Description

Medela's CSF Bags are used to collect, store and freeze expressed breast milk. The bags are presterilized for maximum hygiene and they attach directly to any Medela breastshield so you can pump right into the bag. No need for separate collection and storage containers. A built-in pouring spout can be torn open when it's time to empty the bag. The area for labeling each bag is outside the milk chamber to protect the purity of the milk. 50 per pack.

See all Product Description

Customer Reviews

Most Helpful Customer Reviews

60 of 60 people found the following review helpful:

4.0 out of 5 stars These work best when you are using a compatible pump, February 17, 2002

By A Customer

This review is from: Medela® CSF Bags (Baby Product)

When I was using the hospital grade Medela double electric pump these were the easiest bags to use. They attach directly to the pump, then you just seal it and freeze it. Very easy. The bags are nice and heavy so I never worry about double bagging. The only thing I don't like is that due to the twist tie system they don't freeze completely flat so defrosting takes a bit longer . The other problem with the bags not freezing flat is that its harder to store in the freezer. Most of my freezer is filled with plastic tubs which are stuffed with these bags. I've never had a problem with the milk tasting funny after thawing.

I switched to using the Avent Isis pump ( it actually works better!) so now these bags are less convenient. The Avent bags are easier to use with the Avent pumping system but they are much thinner than the Medela bags and I don't trust them not to leak. I've also tried the Gerber ziplock bags and I like that they can freeze flat ( I put them inside ziplock sandwich bags just in case). I've never had trouble with them leaking but I've heard from a number of other people who have had the Gerber bags leak.

The Medela bags don't work with the Avent Isis ( the milk gets stuck at the top) so I just pump into a bottle and then pour it into the bag. At least these bags are heavy so I trust that they won't leak. I hate the pour system though. I think the little part that you are supposed to tear off is difficult to use. I can never get it to tear.

98 of 103 people found the following review helpful:

5.0 out of 5 stars The best bags out there., June 12, 2001

By 

R. A. Paulk - See all my reviews
(REAL NAME)   

This review is from: Medela® CSF Bags (Baby Product)

These are the only bags I used (and I tried them all) that didn't split in the freezer. The Avent bags tell you to double bag and the Gerber bags are very hard to open when they are frozen which makes it hard to add milk later. The Gerber bags also don't instruct you to double bag so I lost some milk when the bag split. The twist ties on the CSF bags work, but I felt more comfortable using an Avent clip to keep them closed. You could also use a barrette or paper clip to do this.

40 of 42 people found the following review helpful:

4.0 out of 5 stars Durable, easy to use milk storage, May 27, 2001

By 

a_mom (Michigan) - See all my reviews

This review is from: Medela® CSF Bags (Baby Product)

I used these bags with my Medela Little Hearts pump and they worked very well. The instructions are very clear and accurate.

The bags attach easily with a twist tie to the coupler that normally holds the bottle. Removal from the pump is easy, as is securing them for storage with the twist tie. The bags held up nicely in the freezer and thawed well, too.

The method for transferring the milk to a bottle, by tearing a corner of the bag is a bit tricky. Although the instructions didn't say so, I suspect the reason is to keep any contaminates on scissors/knives from transferring to the milk. The first few tries we spilt a bit of the milk, but after a bit of practice it wasn't a problem.