I've had a few of these water bottles and the major problem I've had is that they all leak... I got tired of that and looked for a bottle that would seal properly and not leak either in my bag, in the car on the front seat, etc. Came across this bottle on eBay and decided to buy it. Well, it does not leak! I can throw it in my bag, don't have to worry if it's upside down or flat or wathever, it simply does not leak! for me that was the most important aspect. It's well made, seems solid enough and of quality plastics. Yeah, I would recommend this bottle.