Our self-adhesive pen loops made from sturdy elastic material. It can hold a pen, pencil, fountain pen or wax crayon, it is suitable for majority of common writing instruments. The self-adhesive loop is simply affixed to the inside back cover of your notebook, so you can carry your favorite pen with your notebook at all times.Details Self-adhesive Size 1.6 x 1.6 in. 0.60 in. elastic loop 1.6" x 1.6"