This shaker is being used for month. When shaking the powder it is not germetic enough and could leak from top. Also the grill inside not so effective as spiral ball for breaking down the foam (e.g. from egg protein).

So I’ve had this brand before (From other protein manufacturers) and never had an issue, however the 2 I’ve just had delivered have both leaked a little when shaken up.

Sealed tight, no leaks when shaking. Holds a good amount of liquid. Very practical :)

Good quality shaker, same as most brands. Only issue here, and it's a small one, is the colour. Then"my protein" blue isn't my favorite. Would be nice to be able to get black or something else.

Love this shaker it's perfect for the job and a nice size.

would strongly advise shaving before using this shaker, the poorly designed flexible lid tends to drip milk into your facial hair as you drink, that’s if you haven’t already poked yourself in the forehead with it too. I have a relatively slim head and still find the lid is awkward to manoeuvre around. The filter is very good however and mixes the shake perfectly

These Buchsteiner style shakers are the best I've used. Great size, mix well and easy to fit your hand in to clean. Will definitely buy more. Recommend.

Very good shaker does what is intended, left my protein shake with no lumps etc. Cannot fault it!

Quality shaker had for some time defo gonna buy some more 👊

Very happy with this shaker! No leak and quick and efficient to use and wash.