Shaker Bottle

This is the worst shaker I've ever bought. It doesn't have the little spring ball, it has the plastic net that sits up top and does a terrible job mixing. The interior corners are sharp so powder gets stuck and doesn't dissolve, the cap manages to trap liquid and drip it on your face every single drink. I expect better from someone who claims to use science to create the best products. There was clearly no effort or research put into this product. Blendtech makes a far superior product. Don't waste your money.