I like that this has a screw top, so I can put it in my handbag without fear of leaking. It doesn't include a mixing ball, and the plastic mesh to filter out lumps is not the most effective filter I've come across, but it does the job well enough. Because I use this more for taking breakfast smoothies to work than for powdered shakes, this is not really an issue for me.
Purchased 5 of these for use in a care home for foodlink supplements, easy to ensure correct levels and mixing the powder/ liquids by just shaking. I like the small screw top for pouring into cups and washes well in the dishwasher. in particular the easy to read measurements on the side for oz /ml getting the right dose is much easier and the bottles are ideal for storing in the fridge and help prevent cross - contamination.