Review on 16 OZ Protein Workout Shaker Bottle with Mixer Ball and 2 attached Storage Jars for Pills, Snacks, Coffee, Tea. 100% BPA-Free, Non Toxic and Leak Proof Sports Bottle by Trisha Phillips

I've had it for a while now and I really like it. I had a few "oops" with my cocktail spilling all over the place from either not screwing the cap on tight enough or not snapping the cap on for the drink. The rubber gasket helps to screw the cap tight enough. Both are user error. My only real problem is seeing the ounce markings on the side. I can not. They are the same transparent color as the mug and I found them impossible to read. My solution - I took my marker and colored the 2 I use the most (see my photos). That issue aside, I love this shaker. It is easy to clean and the jackball is easy to clean, comes to the brim and is a pleasure to use.