The DefenderRating:This is one strong beverage! From the moment we first sipped this thick, sweet, and flavorful concoc...Mango Island CalmRating:Mango Island Calm is yet another superb fruit & herbal concoction from Smoothie Boost. It has a very... Jump'n Ginseng Wild BerryRating:This flavor of Smoothie Boost is not as thick as any of the other flavors, since this beverage has a... Are we missing a product? Add It Here Buy Smoothie Boost Online Comments × Contact the Manufacturer of Smoothie Boost By using this form, you will be sending an email inquiry to the makers of this product. Please enter your message: Subject* Message* How can the manufacturer contact you?This information will be used for this inquiry only. Your Name* Your Email* Company Phone Number Address City State/Province Postal Code Country Please answer the question below What do you call the thing that goes on the top of a beverage bottle?