Optimum NutritionON Shaker with Stainless Steel Mixing Ball, BPA- and DEHP-free, Dishwasher Safe, Black, 600 ml

The bottle feels sturdy enough and has been fine for regular home use. It is easy to clean by hand, although, the writing on the side came off the first time I put it in the dish washer. I use mainly for protein shakes and the steel ball helps to break up and lumps.

great for shakes I like the spring it makes it easy to mix the contents, sturdy cup and easy to wash

The Optimum Nutrition Protein Shaker is a solid choice for anyone in need of a reliable and affordable shaker. It feels sturdy and well-made, so I expect it will withstand regular use. I particularly appreciate how easy it is to clean – a quick wash by hand and it's ready to go again. It's a decent size, more than enough for my regular protein shakes and the little steel ball helps to break up and lumps making it easy to use.While the plain black design is sleek, it can be a bit tricky to see the liquid level inside. However, this is a minor inconvenience compared to its overall functionality. I've had no issues with leaks, even when giving it a vigorous shake, and the flip cap keeps everything secure, I do hold onto it tho, just in case! If you're looking for a good value, no-frills shaker that does the job, the this a good option.

Bottle is great, doesn't leak at all despite what some reviews may say. Steel mixing ball works incredibly well, I used to use a cheap blender to mix my whey with milk but this bottle mixes really good.

Love it

Good build quality all in all.Does tend to absorb weird smells from milk though, but nothing too bad.Lack of contrast on the measurement markings makes it a pain in the backside though, so I'd recommend people buy a clear one with some proper markings on it so you can see how much liquid you've put in it without having to visit the actual sun to see it.Oh, and the branding scrubbed off basically instantly, so if that's important to you for whatever reason then maybe give it a miss.

Very good mixer shaker.

Works just fine as a shaker, but the branding started coming off after just a quick rinse