The key benefit with SmartShakes products is the storage compartments in which you easily store several servings of nutritional supplements. Such as protein, creatine, vitamins, fruits, berries, nuts or pretty much anything you like. SmartShake gives you the freedom to carry around everything you need for the whole day, all in one unit! SmartShake is made from high quality industrial BPA & DEHP free plastic. It is safe to use in micro, freezer and dishwasher. Thanks to the advanced anti-leak technology the lid and the cap is 100% guaranteed leak proof even for hot and ice-cold drinks.