Adjustable Elastic Strap: The pen holder comes with an elastic strap, easy to adjust, suitable for heights from 8" to 11.5", suitable for most hardcover journals, notebooks, planners, tablets, etc., suitable for various occasions, such as meetings, classes, business trips, etc. It can effectively protect and fix your pen without worrying about losing your pen; enough quantity to meet your different needs Premium material: these pen cases are made of high quality PU leather with tiny delicate stitching, soft and strong ;The elastic band is made of nylon with good elasticity and can be easily adjusted Multifunctional Pen Holder: Compatible with a variety of notebooks or books, these elastic pen holders can be placed vertically and horizontally, sturdy and easy to carry a hardcover journal or tablet for everyday use, or can be Practical Design as a Practical Gift for Friends and Family: There are respectively adjustable elastic bands on the upper part of the notebook pen holder, which are firmly fixed on the notebook and not easy to slip off; 4 pieces of beautiful colors are attractive and easy to find, practical for office and school Accessories so they will stay firmly on your notebook and won't slip off easilyDelivery Quantity:: 4 PiecesProduct color: 4 colors