“It should be noted that some of the older reviews are for an older product that is no longer supplied or pictured.
The older shakers contained a sphere-shaped spring which would rattle around and help mix the product.
Current (as of this review) shakers have a removable plastic grille that mixes the shake by repeatedly sieving it while you shake.
I find these new bottles not to be as good as the old ones because the powder will often clump up in the rim around the sieve, and the shake will work its way into the gap between the lid and the plastic grille, meaning the whole thing has to be completely dismantled and hand-washed, and any clumped powder stuck in the rim has to be blasted out with tap water or using a brush. The old bottles you could just half-fill with water, shake them up and you were pretty much good to go.
Still, they're quieter than the old bottles, so that's a plus.”
