We are constantly needing more storage space, and that's why we like to be strategic about how we're traveling with our gear and bikes. The EXO DoubleUp makes it all easier. It secures to Yakima's EXO SwingBase or EXO TopShelf for an easy storage solution where we can fit more than just our bikes on our hitch mount. And, our bikes are secured at the wheels so we aren't witnessing any scratching of our carbon frames.