Matyz 6 PCS Glass Breast Milk Storage Bottle (6oz Each)

I bought these specifically to freeze breast milk. I had three bottles in the freezer and when I went to take one out to defrost, I discovered 2 out of the 3 are completely cracked and broken all along the bottle. So disappointed! I left plenty of room at the top and all the bottles did was sit in my freezer! I don’t know if I can use that milk now since I’m worried there will be glass in it. Also, I was hoping to be able to feed my baby from the bottles too but even the “S” nipple is way too fast—milk streams out like crazy! I am very unhappy with this purchase as the bottles are now completely useless to me.

UPDATE: I’ve been using these daily for the past 4 months, and they’re still one of my favorite baby item purchases. They haven’t leaked (you just have to make sure the silicone piece is correctly in place inside the collar), and they’re really durable. I dropped a couple, and they didn’t break. I also bumped one against a pint glass in the sink, and the pint glass broke! (RIP pint glass). They still are crystal clear.. no discoloration of any kind. I haven’t tried to freeze anything in them. Although I’m not sure I would ever try to freeze liquid in glass 🤔 These are just wonderful!I will not go back to plastic bottles!! I returned to work 2 weeks ago, and my 5 oz bottles didn't have enough capacity for one pump. So I started using the 6 oz plastic Lansinoh storage bags, then pouring everything into a big container when I got home. Not only did I not like using so much plastic like that, but I also didn't like all the milk that was left behind in the bags. So I found these 6 oz glass bottles (with a little extra room at the top!) I wasn't specifically looking for glass, but oh man do I LOVE them! My plastic bottles have gotten cloudy from use and washing. These are crystal clear. And the plastic/silicone lids look and feel really nice with them. They fit the Spectra flange perfectly, so I pump right into them. I can also fit all 4 into my Medela cooler with the freezer pack. Don't think I will ever go back to using the plastic bottles!

There bottles are amazing: great size, shape and feel. I hesitated putting them in the freezer after seeing the review. However, freezer safe would make these bottles perfect so I took the chance, first just with water and 2nd, 3rd time with breast milk. All three times there was no issue at all. Two things I paid attention to: (1) I did not fill more than 5oz, which is more than enough time for liquid volume expansion. I think 6oz would be ok too, but my baby does not eat more than 5oz. (2) I did not tighten the lid too tight, which I do not think matters just my preference.------- below caps are compatible with the bottles & Philips Avent Natural Baby Bottle Nipplehttps://www.amazon.com/gp/product/B07JMJCVP9/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&th=1These caps are compatible with "Philips Avent Natural Baby Bottle Nipple"As a result, I do not need to restrict myself to Matyz nipples. Though the Matyz nipples are good quality and very soft, I prefer the slowest flow nipple I can find as my baby is both breast and bottle feed.------- below collars and caps are compatible with the bottles & Philips Avent Classic nipples(1) collars: https://www.amazon.com/gp/product/B07DHH9SP4/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1(2) caps: https://www.amazon.com/gp/product/B07QR25SL4/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1

I've been looking for glass bottles forever and finally found these. I love that I can safely reheat milk in glass versus plastic. They do fit with Spectra flanges, however the threading isn't exactly right and for one of my flanges it always feels like the bottle might unscrew itself and fall off, so I end up holding it up while pumping to avoid any super sad milk spillage accidents. It also comes with nipples so that you can feed baby directly from this bottle, but I prefer to use Comotomo bottles, so I can't comment on how those nipples work. But so far, I haven't been able to find anything better so I'm satisfied with my purchase.

I wish I’d had these when my baby was new; I wouldn’t have gone through who knows how many sets of plastic bottles. My kid doesn’t use bottles anymore but I do still pump and these fit my Spectra S2 perfectly. They’re easy to clean, no staining from other foods in the dishwasher. The only problem I have with them is that I use tape to label the bottle for daycare, and tape won’t stick to cold glass (not sure if it’s a condensation issue, though I wipe it dry and have the same problem). Not a manufacturer flaw, but something I need to figure out.

I love storing my breast milk in glass vs plastic. These bottles are great quality and come with a nice note from the owner, you can tell that they care. They fit perfectly on the spectra s2 so I’m able to pump directly into them. They come with storage tops and nipple inserts although we usually use the ola bottles for our baby, it’s nice to have the nipple option. I also like the different color tops so that I can stay organized.

These bottles are the perfect size and weight and work easily with my Spectra pump. I had one bottle that seemed to leak so I contacted customer service and they quickly sent me a new set. They also checked in to make sure I was satisfied after receiving them.The only reason I wouldn’t give them 5 stars is that I’m unable to use the “complimentary” nipples that come with the set because even the small size flows so fast it chokes my 4 month old. They definitely don’t have a slow flow one but I have been able to use the MAM brand successfully as a replacement. Also, I wish they would make bottle sleeves.

Purchased to pump directly into using a Spectra S1, and I have not been disappointed. I've also used these to freeze milk and had no issues. Worthwhile investment if you're up to handling glass the way it needs to be handled and you don't want to keep putting your babe's milk in plastic.