Buddy-Buddy is a very simple product with great usability. It is on interchangeable baby bottle system with two main containers with threads on the top and bottom, which are used to attach or detaches the bottles. This product includes a sippy cup cap, bottle nipple, nipple cap and a handle. Having two separate containers give the option to the user to put different drinks in them, without them mixing. It is very easy-to-carry, and it takes less space than a baby bottle and a sippy cup separately. Parents can use Buddy-Buddy for their newborn babies until they become older. Buddy- Buddy has a very simple form with 3 primary colors.