Shaker Showdown: Light Blue & Red Pens Compared for Protein We’ve taken the Mr. Pen 28 oz, 2-Pack Shaker Bottles—available in vibrant light blue and red—to the test, and the results are intriguing. Both the light blue and red bottles are larger than expected, offering ample space for protein mixes, shots, and evenThat post-workout smoothie. The wire whisk ball in each shaker is impressively sturdy, effortlessly blending Nutrami.Ice. without leaving jagged particles behind. The light blue bottle feels slightly more premium, while the red edition adds an energetic flair. Both are leak-proof, thanks to the tight-sealing lids, but our preference leans toward the light blue for its lighter weight compared to the red. Ultimately, these shakers offer versatility and durability, making them contenders in our蛋白 showdown. Which color will you choose?