Filled the bottle with ice (about 2/3 rd of the bottle) and water. Shook it upside down and tested it for leaks, and it was all good. No condensation on the outside.The bottle still had some ice in it after 24 hours (left inside the house at around 77F). The duration might be shorter if you leave it outside in 90F heat. Overall a decent bottle.I too was having issues with how hard I had to suck to get anything out. After looking at it for a minute, my husband realized the straw was hitting the bottom of the water bottle, blocking the flow. So, he pushed the straw in further into the lid, and I could suck from the straw with no problem.The problem was NOT the little rubber seal on the lid. Hopefully this helps other people that are having issues.Also, it keeps liquid cold for a super long time. It's a pretty nice water bottle. I'm very happy with my purchase.Lost the first one. I'm so glad to buy another. My baby takes this to school. Makes life easy and stays cold all day. Even during the heat wave.Great for elderly. Easy push button and sip for elderly. The only thing I think is bad for normal people is that the push button is super sensitive. It could open if brushed up against in a bag. But it is the only thing easy enough for my elderly grandmother to open and keep cold drinks by her bedsideLove this cup!ExcelenteThis thing keeps your liquids ice cold for over 24 hours. It’s great. The only thing is you will want to flip open the top with your hand over it or it will fling water every time (not a big deal).I have been wanting a metal water bottle to keep drinks cool in the summer, but the heavily insulated bottles are too wide for a standard cup holder in the vehicle or with the cup holders that come with children's car seats. This water bottle is narrow enough to fit in a child's car seat and the standard cup holders of a vehicle. Keeps drinks cold for hours, even when the bottle is left in a hot vehicle all afternoon.Does the job with keeping drinks hot or cold. The spout takes a bit of getting used to. I took one star off because despite thorough washing it took ages for the disinfect type TCP smell/taste to disappear from the spout, which made the whole drinking experience quite unpleasant for the first couple of weeks of using this each day. Ok now though.I love the material, size and so on... I believe it could be the best water bottle in the market, but there is just one problem.. It leaks. I hope it is the only one bottle defected, so i will give one more chance ?
