This is a shaker bottle called BlenderBottle Classic V2. A mixing ball is also included. Product Details Features: Equipped with a patented mixing system, a stainless steel blender ball, allowing you to mix protein powder and other ingredients smoothly without clumps. Design: The wide opening makes it easy to add ingredients and clean. Also, the rounded base design with a rounded bottom prevents powder from remaining in the corners. Functionality: The screw-on lid has a leak-proof sealed design, and the flip cap has a spout guard that can be opened without touching the mouthpiece, making it hygienic. Safety and Care: Made from BPA and phthalate-free materials, it can be washed on the top rack of a dishwasher.