I was looking for a metal shaker as I prefer them to plastic plus I thought it would be easier to clean and less odours etc. This seemed like the perfect cup. It was great to begin with although the inside of the lid is a little hard to keep clean with all the plastic edges. You have to make sure you really get in there with a brush fairly regularly to keep it clean, especially if you are using it for protein shakes etc. A couple of months in to owning it I went to open the pourer spout on the lid one day and it just snapped off and left a big hole in the lid. So now the cup is totally useless.. Myprotein you need to either make a metal lid or offer replacement lids. If you read the reviews you can see this is obviously a common problem as lots of people have reported the same issue!

Lovely looking bottle... until you go to drink from it.... found half my shake down my front. Kept trying to refit the lid but nothing fixed it. Think the cheap plastic ones overall worked better. 

Leaks around the lid plus mine has warped at the bottom so it wobbles and falls over. 

It was a great shaker while it lasted, however after just a few months of use the lid eventually broke off. I had a friend who also had the same shaker. The lid snapped off that after falling over

I really enjoy using this shaker. Pros: it is lightweight, smell from protein powder does not stain (obvs), no metal ball means it is quieter and less obnoxious to shake, keeps the drink cold (especially when put in the fridge for 15 mins) and my shakes are always really smooth with no lumps of powder. Cons: the lid can be a bit awkard at first but you get used to it after using for a while, it is apparently not dishwasher safe. I was unsure after reading the reviews whether to get the shaker but now I am really glad I did.

Over time the flip up cover on the lid gets harder to open. Having to force the lid open results in the flip up cover cracking and eventually breaking. This is my second metal shaker that has broken in exactly the same place.

Great quality. Much better than the plastic shakers. Keeps your shake or drink nice and cold.

Nice looking shaker, cannot really mix the pouser with the water properly unfortunately 

Not the worse shaker I've had, will definitely last longer than any plastic ones that get smashed and broken. The fan blade type shaker in the lid isn't as effective as others I've used, and I've resorted to using a spring ball as well to make sure my shake is fully blended.

Perfect consistency shake every time, also keeps it nice and cold!