Some protein shakers have become high-tech now, with ergonomic shapes, spill-proof lids and balls that help blend your drinks so that they are lump-free. Some people may find that these are overly fancy and complicated, and that a simple plastic bottle – like a used water bottle – should do just fine. The truth is probably somewhere in between, but there are some features of these fancy bottles that are actually quite useful.
I love the colors of these:
Cool protein shaker pictured: BlenderBottle Sport Mixer 20oz & 28oz by Sundesa in pink and blue