I purchased for the first time and my experience is really good. The protein shaker is of good quality further the protein is great.

It is really made-up of 100% stainless steel. I can undoubtedly drink warm in this shaker which I missed with my previous plastic shakers. Overall I am satisfied with the product. I wish 'my protein' would continue come-up with so useful products like this metal shaker.

Really keeps the beverage  temperature inside for a long period of time, you might need help with a mixer tool inside ( ball), for some type of protein shake.

I got this shaker free with my last purchase of Whey Protein. I find this shaker much much better than the last plastic shaker which I owned. The whey protein gets completely dissolved in no time. If properly closed there is no leakage also. So thumbs up to this product. It is a good product

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. 

Shaker is of amazing quality and mixing is just awesome... Just counting... 4 as of now...

I have been using it since getting it a few weeks back. It's a great shaker, both utilitarian & pretty.

Terrible product. Plastic lid broke after less than 5 uses. Costs twice as much as an all plastic bottle but the lid is worse.

Positives: Looks good Feels good Keeps drinks colder for longer Negatives: Built in mixer isn't up to the job Built in mixer can't be removed Built in mixer tricky to clean Weird measurements on the outside, who wants to measure out 443ml? Hard to measure properly as you can't see the liquid from the outside. Recommendation: Stick with the cheaper plastic shaker with the spring.