2-in-1 Shaker Tumbler: Includes a BPA free BlenderBall Color; leakproof straw or swig design; and Insulated stainless steel makes it ideal for greens, drink mixes, smoothies, hydration powders, collagen, or water bottle enhancers Straw or Swig Option: This shaker cup for protein shakes is designed to keep drinks cold for all day use. Get the powerful mixing technology with two options of enjoying your mix-ins from the straw or swig lid. Leakproof Design: When the straw is removed, the Shaker Tumbler is fully sealed for a complete leak proof mix; this stainless steel tumbler can be quickly and quietly mixed in any environment BlenderBall Color: Introducing the new durable BlenderBall Color for the 2-in-1 Shaker Tumbler which offers bold color options and the same mixing capabilities you love from our traditional wire whisk Double-Wall Insulated: Keep drinks colder longer in a 24oz insulated tumbler and make your drink last for any activity such as yoga, cardio, or weightlifting making it the essential gym accessory