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.

From all the shakers I've had over the past 5+ years (mainly plastic), I thought I'd treat myself with this metal one, and early doors it was nice, felt like a nicer product. But a few months in, and considering the gyms have been shut for a few months so it wasn't even used for 1-2 of them. The lid has snapped off. Think I'll stick with the plastic stuff

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

Brilliant shaker so much easier to clean as no addition parts in the lid that you usually have to take out and wash. This shaker has it built into the lid making it so much easier to clean.  Great seal and very easy to wash. Very happy with this superior design. Best shaker I’ve got and there are quite a few in the cupboard. 

It has mixed my whey powder and milk fantastically no lumps!

It worked great for a while, the built-in mixing blades on the inside worked great to shake mix without the need for a rattling mixer inside. Unfortunately, after a few weeks the aluminium ring around the plastic lid came away, as it's just glued in place, if this was the only issue, it would have been fine. The glue on the plastic was unsightly, but it still worked. Then as many others have reported, the cap tore at the lid. For the repeated use of being stoppered and unstoppered the plastic is too thin and it eventually just tore away with the cap still inside the top.

It looks really cool I like it but after using it twice top lid just ripped off I am not really happy about the quality of the plastic on this product.

Great shaker use every day. Easy to clean, does exactly as what it says in the products description 

top plastic part is very difficult to clean. opening tab broke off, on two shakers. not a good design

I was looking for a metal bottle as a better choice for the environment. This looked like one of the better ones on the market. It was perfect for about 3 months but the plastic cap has now broken and the rest of the bottle is now useless.  Please Myprotein make this bottle with a metal cap, it would be so much better. It’s really difficult to find a good metal water bottle.