Grabit Home's Portable Vortex Multi Purpose Mixer Bottle + 4 FREE AAA Batteries! Completely blends powders and liquids- Great for making protein shakes! Create a tornado like vortex with a push of a button Made of Stainless Steel and acrylic for a beautiful look Perosonal blender bottle 16 OZ- BPA FREE Battery Operated- FREE 4 Pack of Panasonic AAA Batteries included in order.