Get others to do the advertising for you when you give them this fantastic Shake-It (TM) compartment bottle! It's a BPA free item with a specially designed Vortex (TM) ball that can break up powders. Getting some protein is the perfect way to end a workout, and you can make it easier for your customers. Other features include a flip-top lid, swivel finger loop on the lid, a removable bottom section, and ounce / millimeter measurements embossed down the backside. Give customers this top rack dishwasher safe item and gain their gratitude and continued business!