ShakeSphere Tumbler: Protein Shaker Bottle, 24oz Matte Black with Black logo

The product in question is a protein shaker that offers a unique and convenient design. Users have praised its ability to effectively blend the contents without the need for a mixing ball, making it ideal for protein shakes and other powder mixes. The shaker holds 24 oz, but keep in mind that the capacity may be slightly reduced when using powder mixes. One reviewer mentioned using it for two days' worth of lunch replacement meals, with each meal being around 10-11 oz, and found the shaker to work great for their needs. The product also received positive feedback for its easy cleanup. Overall, the reception of this protein shaker has been highly positive. Customers appreciate its functionality, convenience, and sleek design. However, one minor inconvenience mentioned by a reviewer is the lid's opening and closing mechanism, which requires holding it open with a finger while drinking to prevent it from closing on the lip.