VOLTRX shaker bottle with stirring ball 2 packs are very cheap, but I hope there is no second version to store your “dry goods”. The shake mixer bottle is very well done, and the mixing ball can mix the dry material and the liquid very well. I find that these products are better than brand names because I have a few bottles that almost all burst from them. Only time will tell how long these materials will last, but they look better and the plastics are thicker. I think I like plastic shapes and mixed balls of different shapes because metal balls are easy to stick together and difficult to clean. In general, my only complaint was that the lid was not fully retracted when I opened it, so when I wanted to take the last bit out, the lid hit my forehead and I had to tilt my head back more than I liked. Because my neck is a bit stiff. But it’s well done, I would definitely recommend Voltrx electric blender bottle!