I've had two of these bottles in the last month, the first one I took on a trip with me and thankfully it lasted most of the trip before it began leaking everywhere. I let the company know and they kindly replaced it. However, the second one leaked right away and in the exact same place. It leaks right where the hard plastic spout connects to the soft plastic bottle. I was surprised when the replacement item began to leak much faster than the original. I decided to take matters into my own hands, and siliconed all over the areas that leak and have no issues now. I would not recommend this product unfortunately it is not leak proof.