Ring binders are indispensable for schools, offices and homes; and though there are many choices that serve the purpose, if you're on the lookout for a professional, ergonomic paper storage solution, the DXL™ Heavy-Duty Locking D-Ring Binder might be the right choice for you. The DXL series was carefully designed to maintain a compact footprint while offering more than enough space to hold all of your important over-sized materials, including index tabs and sheet protectors. Each binder features a curved-back spine that fits perfectly in your hand and that looks great when the binder is placed on a shelf or desk. Spine-mounted label holder with thumb notch and insert card makes binder organization a breeze. Premium vinyl cover is tightly sealed over thick and rigid chipboard. Back-mounted, locking D-rings allow pages to lay flat and prevent document wear and tear, and a no-rivet spine adds to the binder's sleek, clean appearance. Two clear inside pockets accommodate loose documents and un-punched papers. Order multiple binders to create a custom reference system for weekly or monthly office reports, multiple classes at school or other unique personal or professional projects.