SmartShake Original Series - 600ml (20oz) Brighter than before! Introducing the new 600 ml (20 oz) neon series SmartShake. With the new neon series, SmartShake combines function with fashion to create the perfect shaker and accessory. With two or more cups you can mix and match the interchangeable parts to create your own customized shaker cup. Match your outfit, mood or personality with SmartShake’s new neon series.