Medela Pump and Save Breast Milk Storage Bags - 50 Count | BPA-Free, Pre-Sterilized | Perfect for Travel, Work & On-the-Go Moms

Easy to use but im not sure its worth it.I buy Medela pump and store bags for the convenience of pumping right into bags, rather than into bottles and transferring the milk into bags. I am a nurse at a busy hospital and if I want to get two pumping sessions in one 12 hr shift, I have to be as efficient as possible. With that being said. There are things I like and dislike about these bags. I have been pumping for almost a year now and have tried many, many brands of bags, so here is what I think.What I like:1. The holes where the pump adapter hold the bags are relatively sturdy. I have only ripped a hole while pulling the bags off the pump adapter, and at that point I don't really care because I don't need the holes any longer.2. The adapters that come with the pump work great. They screw right on to my pump accessories with no issues3. The bags can "stand up by themselves" without assistance. More on that below.What annoys me about these bags:1. They don't hold hold enough milk. I can produce 5-6 oz from one breast and only 3-4 with the the other. I ALWAYS have to pour my excess milk into the bag with less milk in order for both bags to zip properly. Hence the reason why "standing up on their own" is a nice feature. So as I'm preparing to re-portion the milk, I set the bag with less milk on the table while I wrangle with the other bag, trying not to spill its contents on me. I do not have this problem with Lanisoh and Nuk bags.2. The zipper. I hate the zippers on these bags. I feel like it's too hard to get a good seal the first time I zip. I have to double and tripple zip just to make sure they are closed. I prefer the double zip on bags like Lanisoh.3. They don't freeze flat. Maybe they could if you don't put very much milk in them. But due to their small size, mine are filled full.You may be wondering why I still give this product 4 stars with the complaints I have. Bottom line is that I'm still going to buy this product due to its sheer convenience. They are WAY better than Ameda store-and-pour (same concept as Medela pump and save, just a suckier product). The pros out way the cons for me. This product makes pumping at work more manageable and here's to hoping that the issues I have with these bags are fixed for when or if I have another baby and have to pump at work. ;)So easy to use! I love medela! Been using this for about four years now. Thank for two kids. Pumping game is strong and with the help of the adapter I save so much time from washing bottles! It does not leak for me like some have mentioned. I pump a good 4 ounces for each side. Love the adapters and will def need to buy more of the bags!There are a lot of negative comments about these bags. I strongly disagree. I think they are great. Like all medela products.To address some of the common complaints I have seen about these bags:- durability: I have never had a bag leak or break. I sometimes fill them all the way to the top, sometimes I only fill up halfway. I sometimes freeze the bags, I sometimes leave them in the fridge. I sometimes put them in hot water to thaw, sometimes them them thaw in the fridge or on the counter. Never have I had any problems.- size: I like that I can only put 5oz in the bag. The smaller size (compared to some other bags) means that I don't feel like I need to fill a huge bag for fear of wasting a bunch of space I have paid for. Because when I thaw milk sometimes I only want a few ounces. If I only had huge bags I would need to thaw large amounts of milk, and then waste that milk. I prefer smaller bags that I can thaw smaller amounts and therefore waste less. Also, smaller bags make it easier for me to organize in the freezer. I can fit them into smaller spaces and gives me more flexibility. If I want to freeze a lot of milk then I use more than 1 bag and then thaw more than 1 bag. That to me is not a hassle. Two small bags to me are the same as 1 big bag.- ease of use: they are so easy. You can pump into them directly, or, you can pump into a bottle and then pour the milk into the bag. That is actually what I prefer. But both ways work.- measurements: yes, the ounce markings on the bag are not perfect. But medela warns about that. A bag that opens large on the bottom, and then narrows on top, means that the ounce markings will not be perfect. They are an estimate. I never had this be an issue, it is not like I need exact 1/4 ounce measurements. My baby drinks 2 ounces one time, then 5 ounces the next, and it is never predictable. Just like breastfeeding. So I'm not worried about exact exact measurements.- storage: I find these realyl easy to store. Again, the smaller size to me means that I have more flexibility when placing them in the freezer because I am not trying to make a large frozen bag fit into a tiny space.Bottom line: I totally recommend these bags. You can't go wrong with medela for breastfeeding gear.Pretty handy. Saves alot of hassle and because of the shape of the bag, they thaw from the freezer quicker than a bottle.good product, but expensive compared to other brands. You could pump into a bottle and transfer to cheaper bags. But these fit well with Medela swing pump hence 4 starAmazingI bought this to make my life easier. But now I am not able to buy the bags separately what's the point of buying the connector all the time. Also, the quality of the bag is not great.The pump is great, a bit too expensive though...The Calma system is terrible, tried 3 times on a 1month baby and she was choking and vomiting.