Blender Bottle has developed a fascinating product that, once you use it, you'll wonder how you got along without it for so long! Blender Bottle is container that you put protein mixtures in; whether it's pancake batter, protein shake or whatever you need to mix. The Blender Bottle has a small wire ball inside that, when you shake the Bottle, mixes the liquid simply and easily. No more spoons and spending time stirring, you can use Blender Bottle like a bartender and shake it up! No matter the thickness of the protein mixture, Blender Bottle will handle it. They come in two sizes: 20 ounce Mini and 28 ounce Original with pour spout.