Review on 🍶 Matrix Shaker: Insulated Protein Mixer - 20oz Stainless Steel Blender Cup Bottle (Red) by Martha Lieras

I've had this shaker for a long time. I've tried to stay with this bottle long enough to come to a conclusion about the product. It serves its purpose but has one major drawback. The lid does not stay closed. Each time you open the mouthpiece, the entire cap will come off if you don't hold it tight. It also leaks occasionally when I'm trying to shake up my pre-workout. If the lid isn't perfectly seated and held there, my drink will spill all over it. Until they find a solution, this isn't a viable shaker.