Excellent Material - The 5 Pieces 40*40mm Stickers are made of superior polyurethane leather. The Leather have luxury surface with strong stickiness on the back of the leather. The attached elastic band is sewn into the adhesive piece for long-lasting wear and tear. The knitted heavy stretch elastic stays resilient over time and through heavy usage. Elastic Fully Adjustable Loop - Every loop is made of super elastic rubber, so you dont need to worry about your pen dropping from the loop or not accommodates your different sizes of pens and pencils. Convenient - Perfect solution for having your pen at hand. Designed for journals, notebooks, planners, calendars and other professionals, and it can clip on books, notebooks, journals, calendars, etc. Never Lose Your Pen Again - The purpose of the pen loop is to make your life easier. The loop firmly holds your pen, thanks to the strong adhesive and special elastic. Easy to Use - Just peel the sticker on the back of the artificial leather, then adhesive it to any surface of the books where you need to hold the pens. Package Included 5 Pcs Black Self-Adhesive Leather Pen Loop Holders Specifications Color: black Material: premium leather sticker+elastic loop Leather sticker size: 40*40mm Loop size: 19*20mm Premium Quality Made from superior polyurethane leather that is layered for a tough and durable build, premium adhesive and strong elastic band. The strong adhesive and special elasticity make the pen holders firmly hold your pen. Durable Elasticity The attached elastic band is sewn into the adhesive piece for long-lasting wear and tear. The knitted heavy stretch elastic stays resilient over time and through heavy usage. Perfect Design Perfect solution for having your pen at hand. This perfect design will make your life easier. Match it perfectly with your favourite notebook or other devices, easy to carry it everywhere, solve the trouble that you often look for pens.These Pen Holder will not leave glue on your book or any other devices when removed the pen loop. Fit for Most Notebooks Proper 1.57 x 1.57 in size can easily fits most most notebooks, journals, techo and calendars in any size. Portable and Easy to Use Just peel and stick the adhesive part on the inside back cover of smooth place. The Holder is compact and portable, making it more convenient to carry your pen out with the notebook. Multi-functional This Pen Loop Holder can stick on any smooth surface. Designed for Notebooks, iPads, Laptops, Tablets, Journals, Planners, Clipboards and Calendars. Holding pens, pencils and stylus.