Ive now found it's handy having two shakers, this one was a FREE gift with my first purchase. Whether it's a production fault or not I found if you fill it to the top it leaks through the seam on the lid. No issue as I don't fill it all the way. Other than that use it for water only now as I've got a smart shaker for my shakes.

It's ok... but a bit 'plasticy'. The plastic grid inside (to help mix) can be broken quite easily. The seal is really good; no leaking.

Over the years, I've had several of these shakers. I replaced them not because they broke or leaked, but because I felt it was time. They're watertight, don't leak, the grate in them makes mixing things so much easier without the clumping of anything. The shakers are also strudy enough so that I don't have to worry about throwing it into the sports bag. The only modification to the shakers that I make is this: I use an Edding to make a black mark on the little measuring scale on the side, which makes pouring milk or water in the exact right amount a lot quicker and easier. Apart from the usual effectiveness, it has other advantages, too. I catch myself often using it as a measuring cup for baking things. Goes Well With: Anything liquid

Good solid shaker, no leaks. I prefer to take the lid off to drink because it can be awkward to drink out of the long spout. Goes Well With: Protein shakes and instant oats

Decent shaker. No leakage and good size.