Trunk Extender with Emergency Flash and Box Cutter by Totes With the Totes trunk extender, your cargo will be safe while in the trunk. Extends your trunk capacity for large objects and boxes without the need for elaborate tie-offs. The Trunk Extender works by securing to the top and the base of your trunk to create a tension-based shield against your items falling out. Perfect for every make of car, and nearly every sized item. Features: emergency safety light (flashing amber light alerts drivers during an emergency), retractable box cutter.