I don't know what others say, but it doesn't leak anywhere, it just has many cuts and if it doesn't dry in time, it flies a little. The content inside has never leaked. I have this one and the blue one, and I didn't buy them from a store in BULGARIA.

Contrary to other comments I read here, personally, it neither leaks when I use it nor when I have it in my bag. Its construction is much more high-quality than a typical cheap shaker, and for me, it is worth it as a purchase.

It is quite helpful but when I hit it, it would leak and yes, I tightened it very well. I don't know if it was this specific defect

Unacceptable for its price. If it leans inside the bag, the water spills. I have checked that it is tightly closed, but still the same... now does it loosen on its own? Was this particular one defective? Is it only made to be left standing upright?