My daughter is 9 months and has only ever used an open cup, I was hesitant to introduce anything else but also want to up her water intake. It took about a week for her to use this by herself but it is now so convenient. It does leak quite a bit but that has lessened now that she has better control.

My daughter is special needs and unable to eat solid foods. We typically use glass mason jars for her homemade blended formula but a lot of places like theme parks won’t let you in with glass so we purchased these. Love them. Pretty and seem to be durable. Love that they are dishwasher safe. Will buy more in the future.

had to get this one to make the set. perfect for my skidaddle bag. it holds my rice, and i have no worries about it being ruined by moisture. grateful y'all!

Quality great and kid loves it.

The best water bottle I’ve found for my toddler! I love that no plastic touches the water, and that there’s a lid to keep the straw covered and clean.

The only down side are the caps they easily break so now I’m left without a cap

I like the cup with a straw. If he's still tipping it all the time, I can leave the inside straw out. It should work for a long time for him. Only thing, he likes to chuck everything. The lid isn't attached very well and it broke.

First of all- these are the ONLY steel and silicone cups on the market that don’t leak. We love them and own three. They get banged around quite a bit but they’re still the go-to we use all the time. Also had a slight issue with product delivery and they stepped up quickly and fixed it free of charge! So grateful for this. With a second LO we will be purchasing another set! Best mason bottles :) thanks Jordan for your help!

This cup goes with all our other Mason Bottle stuff and is seamlessly compatible. Totally recommend! Its a sturdy single walled stainless steel and doesn't leak! Amazing!

We love our mason bottles!

We love our mason bottles!

We really like the concept of this cup. The major downside is the cap. It is big and sort of in the way, especially for our baby since we use this as a baby bottle right now. You can kind of take the lid off but it's not easy and one has already broken. We do really like the bottle in general because it's stainless steel and not plastic, but I think there needs to be a better design for the cap.

I really love this bottle because it's so baby proof from my toddler who's going through a throwing phase... however, I left a metal screw top on for a day or two and it already started rusting! a bit disappointed that it happened so fast, especially for the ptice. but still pretty great quality.

We really like our new bottles for the kids. The custom service is very helpful. Thank you very much!

I bought two of these water bottles for my toddlers and unfortunately they couldn’t hold up to their clumsiness. The bottom of the water bottles are completely dented in and the plastic cover cracked in half after the first drop. Probably better suited for adults and older children. Not the best for 3 year olds

great addition to my camping kit. thank you very much y'all

oh yeah, i got my set complete. ready to adventure. thank you very much y'all

Two of the plastic ring and cap and nipples of the five I ordered do not work. They leak really back. I’m pretty disappointed.

We love this bottle. It will be perfect for when he is holding bottles, and holds more than enough water

We love this bottle. It will be perfect for when he is holding bottles, and holds more than enough water

Absolutely love this cup. Lightweight and perfect size for my toddler!

I have tried so many other water bottles for my kids and I finally found the one! It’s chew proof, it doesn’t have weird crevices that hold gunk, it’s easy to use. It’s really the perfect cup! I will only buy this cup from here on out!

Our almost 2 year old is rough on everything. This cup has survived many throws and poundings. The lid snaps on and off easily, and she’s been unable to break it! Will buy another!

We love how versatile this cup is. It can be used with Mason bottle nipples or the straws that we purchased. It’s much lighter than the 4oz and 8oz Mason jars we also use which makes it a little easier for our 10 month old when she wants to feed herself the bottle.

We’ve loved ours so far. I just wish we used them from the start. I bought 3 stainless steel straw cups hoping to get my 15 month old off the bottle. He didn’t take it at first, so we got the nipples and put a cozy around it and now he takes it just fine! We’ll switch to straws only a bit later on.

The outside gets very cold when you fill it. Makes it hard to hold.

Super easy to use. I love that it's very lightweight and no plastic. My baby finds it really easy to use by herself!

I bought these stainless jars to use as an oil cruit, to go coffee mugs and the like. I can say that the one piece stainless steel lids sold by Mason jar lifestyle fit these Mason bottle jars as well as the MJL oil pour spout. Also the stainless regular sized drinking lid from eco jars will fit. But only the flat top sip spout, the bands they sell to go with their drinking spout are too big and won’t catch the threads. The drink spout will work on this with just a tin ball brand ring. Will Have to see if another companies stainless ring will fit these jars.

The straw of the cup falls out with anyone of motion. have to put it back at least 20 plus times each use. and the cap snaped off super easily for being a toddler cup, 1 drop and it was off.

I love the bottles. I wish the little for the plastic rings stayed closed better. But they would for how I use them. I think I will get some metal rings and different lids. Overall I like the product and my baby enjoys the bottles.

The overall quality is great! They are easy to clean and are not too big. I love the silicone covers and the nipples are the perfect size.