[Internal Storage Racks] Our rolling kitchen island is designed with an internal storage rack inspired by the functionality of refrigerator doors. The two barn doors all feature 2-tier shelf racks, providing easy access to soy sauce, barbecue sauce, and other condiments, and sticks that can keep things from falling. This design effectively optimizes storage capacity while occupying minimal space, making it an ideal addition to kitchens, dormitories, offices, bedrooms, and dining areas.