We've upgraded our popular book bins to make them more functional than ever! Each one now includes a swing-out bottom stabilizer wing (patent-pending) that helps prevent the bin from falling over when full. The wings extend 1" on each side, but can be overlapped to save precious shelf space just swing them back in to stack the bins for upright, compact storage. And each bin includes a built-in label holder with a clear protective cover and colorful card stock labels so you can easily identify contents. Choose from 22 colors.