This Jianxi shaker bottle is specially designed for sports and fitness. It can achieve rapid mixing in just 3 seconds, easily blending protein powder and other supplements. Made of healthy materials, it has no peculiar smell, ensuring safer use. The included 304 mixing ball enhances the mixing effect. With a well-designed body, it's easy to hold and carry. Whether in the gym or for outdoor fitness, it can meet your need to supplement nutrition at any time, making it a great helper for sports and fitness enthusiasts.