SideKick hooks onto the sidewall of your short-box or long-box, gripping the cardboard firmly to stay put. Position it to give your valued comics the RIGHT fit, holding them upright and damage-free. Easily re-positioned as you add or remove books. Designed to solve the age-old dilemma: How to safely store your comics when a box is not yet full? Say good-bye to bubble wrap (you probably need that elsewhere), old telephone books and used backing boards (they're too heavy), or whatever else you may be using to fill empty box space. Suitable for the casual or hardcore collector. Color: Black Material: High-quality, sturdy ABS plastic Width: 7.5" Height: 10.25" Hook Width: 1.25"