Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Was it decided that it does or does not leak?  Is it easy to clean if you put milk in it?  Is there a gasket that is hard to get out or clean under?
Document: I am so happy with these! We had been using the Thermos Funtainers for my kids' lunches, but they sometimes leak, the tops or bottoms break, or the straws get icky and are hard to clean. These are soooo much easier to use and wash. I send my son to school with tasty organic milk every day in these. I just make sure to wrap an extra sheet of the flexible ice pack around the milk to keep it cold. Very happy! **Update**  Sadly, within a year of use, they had started leaking when stored on their side (as they are in a lunch box), so we stopped packing milk (spilled milk in a lunchbox is pretty stinky).
It's hard to remove when you want to clean it. I guess that's good so the bottle doesn't slip out of the sleeve. Also, not as much dirt and debris can actually get in between the sleeve and bottle. Also the screw on top has a silicone gasket to prevent leakage. Don't know why the lid has a loop. I wouldn't hang this guy from a bag or belt. It's heavy and GLASS! I just leave it in my backpack. The loop kinda gets in the way when you are putting it back on.
I was getting annoyed with hard plastic bottles eventually getting moldy & not being able to fully clean them. Metal bottles I'd buy always had a metalic taste, even the ones claiming not to. All I wanted was something that would be easy to clean, not have any taste, & would keep my water decently cold. Recently I was refilling a glass juice bottle with water (which are perfect for the fridge, but not so much for traveling with) when it occured to me to find out if someone was making a portable glass bottle for beverages.I read the reviews of several types & decided on this one because of the silicone sleeve & the fact that it's made in the USA/France as of now.
I have 3 of these now. They're great because they're easy to clean and don't impart funky tastes/ odors. The silicone cover is nice; one got dropped off the counter and didn't break or crack. The only down sides are the fact that the lids can be a bit hard to get lines up right and hair and lint can stick to the silicone cover.
I love these bottles. My family has been using Klean Kanteens, and we love those too, but they dent and leak more easily. These Lifefactory bottles are the perfect size to fit into my kids' lunch bags, and they look really cool, too. I only use them for water, and they are very easy to clean. I hand wash mine, but they say you can put them in the dishwasher.
The size and shape of it is the same as the other Lifefactory baby bottles & sippy bottles except for the differences in the tops. Obviously not a big deal, just an observation. This worked well - it didn't leak and was easy to put in the dishwasher to clean. The lid fit great and it was easy to drink out of. Unfortunately, it is still breakable if it falls on the exact right spot of the threaded spout (where you drink out of). I had bumped it off of my table, and it shattered a big chunk out.
I've only used my Lifefactory bottle at home, so I can't attest to its durability, but I greatly prefer drinking from glass rather than plastic (or even stainless steel). With the silicone sleeve, I know it won't accidentally slip out of my hand. The only con I've found is that I can't screw the lid on too tightly or the gasket seals so well that it's hard to get the lid back off! :)
These are the simplest and greatest design. I hope they never change them! They are easy to get really clean in the dishwasher... no little parts. The neck is nice and wide so you actually get the inside clean. The glass really does make the water taste better than plastic. The rubber liner is good for when you put the bottle down so it doesn't get the table wet. Only down side is my son tried to clean my last bottle by slamming it on the concrete! But as long as you don't let your 4 year old "clean" it you'll be good.
The size and weight is convenient to carry around in my side pocket of my backpack. I actually like the loop on the cap, makes it easy to open, close, and hold. I don't think it's designed to be use with a carabiner since the bottle is relatively heavy compared to plastic. But you do not get the plastic taste with this, which is the reason most people would consider this.I love that the opening is wide enough to put ice cubes in and also to be able to clean. I think this was my main reason for not just reusing a glass bottle, most openings are just to small to put ice cubes in and it is a real hassle to clean them.This bottle is expensive compared to plastic, but it is well worth it since I couldn't find any other alternatives!
Two improvements would be:  1.) Put a rubber gasket in the lid. It is just plastic, so you have to really tighten it down to keep liquid from coming out, and with plastic, if you tighten it too much, seems like you could crack the lid. 2.) The 9 oz. doesn't hold much liquid, would be nice to get a 12oz. or 16oz capacity.
Answer: yes