5 Phases Starter Set, 4 Ounce

Great set! Quality glass bottles and the sleeve makes it feel more durable. My only issue, and thus the 4 stars, is that the nipples that comes with it are very fast flow for 0-3 months (as compared to the Tommy Tippee for the same age). Until the little one can handle the faster flow, I am using the glass bottles to store that day's milk and use them to heat it up before pouring warmed milk into another bottle. I've noticed that the glass bottles warm up the milk quicker than the plastic Medela storage bottles - which is fantastic when you have a crying hungry baby.

Love these glass bottles! Plastic protects glass and the glass is thick enough to heat up with out fear of breaking.

I came to Amazon to buy faster nipples and shocked these don't have 5 star reviews. I bought my set over 4 1/2 years ago from a fancy baby boutique and love them. Now with my 2nd child I am still using these. Nothing has broken, it's glass not plastic which is fabulous that my milk doesn't get heated up in plastic but he can't break it with the cover on top. They have lasted me years and now with a second child I still love them! If you don't like the nipples buy other ones. The playtex ones fit on these so you can get them for all stages. I emailed the company when I first bought them and they responded right away, turns out she was the owner. I love what the company stands for and the product!For reference these are the nipples that also fit these bottles: Playtex Baby NaturaLatch Baby Bottle Nipples

I give only a one star because I really like the idea , and was excited to use them, but the nipple collapsed into itself continuously and I have been unable to use them for feeding. I I have tried to find different I have tried to find different nipples but nothing fits- so disappointing

Excellent product and great customer service! This set has been perfect for us. An added benefit of glass is that it's extremely easy to clean and not prone to residue build-up like plastic. There has been no need to purchase more than the three bottles that came in this set. Additionally, one of our bottle seals was destroyed and 5 Phases promptly offered to mail a new one without charge. Note that I purchased from a local retailer and not Amazon.

I absolutely love 5Phases, more importantly my 9 month old loves his bottles. We have been using them since he was a couple months old. Can't go wrong with a glass bottle that is protected by a plastic sleeve. We use both the 4oz and 8oz bottles. The silicone plugs are also a great feature. Highly recommend the product. Their product is truly one of a kind. They are simply fabulous!!!