Thought these shakers looked like a great plastic free option, however I was disappointed when they arrived. Where the product is advertised as 100% stainless steel, this only refers to the cup part of the shaker. The lid is mostly plastic with a metal ring around and what appears to be a silicone seal. This was a big let down for me as the main driver behind this purchase was because I thought I had found a plastic-free alternative (not to mention excessive plastic packaging). The product description or the product itself doesn't say whether it is dishwasher safe, however I can say after only a couple of goes in the dishwasher I would not recommend. The metal ring on the lid came completely loose after a single wash and the black coating started to peel away. Overall though, in terms of function, this shaker is as good as any. I like that the mixer is integrated into the lid rather than a ball, however this part would be very difficult to clean without a dishwasher. The shaker is also bigger than advertised, closer to 850ml capacity which I like.

Mine arrived with a few dents and got a refund for it. The service is extremely nice and efficient. Otherwise, the bottle is nice itself; stainless steel and leak-proof. Recommended!