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The blender ball breaks up my protein powder completely in about ten seconds of shaking, no clumps left at the bottom. Lid stays totally dry in my bag even when I forget to check it before tossing it upside down. This is the third shaker I've owned and easily the most reliable one so far.

Finally a shaker I can toss in my gym bag without worrying about a mess—the leak-proof lid seals tight every single time. The blender ball breaks up even the clumpiest powder with just a few shakes, and clean-up is a breeze. This one’s earned a permanent spot in my routine.

This blender ball mixes my protein powder into cold water in about five seconds flat, no more clumpy sludge stuck at the bottom. The shaker feels sturdy in my hand and the lid snaps on tight enough that I've thrown it in my gym bag sideways without a drop leaking.