Self-adhesive pen loop, 5 pieces pen loop, pen holder Powerful Adhesive Pen Ring: It can be firmly sticked to any flat surface to ensure the pen case won't fall off easily and don't worry about losing your favorite pen or stylus Size of the self-adhesive pen ring: about 4 x 4 x 0.1 cm, Elastic band with self-adhesive pen loop: approx. 1.3 to 2.3 cm, Suitable for most handwritten notebooks, calendars, journals, schedules, journals, tablet cases, etc. Lightweight to wear: These notebook pen holders perfectly match your favorite notebooks, easy to carry and solve the problem of not finding a pen. High quality PU leather: Made of high quality PU leather, which offers a comfortable touch; 5 pieces are included, you can stick them on your diary, tablet case, refrigerator, etc. Widely used: very suitable for doctors, nurses, teachers, students, engineers, pilots, lawyers, etc. ; Make your work and everyday life more convenient, efficient and tidy Note: The data are all measured manually. Please allow an error of 1-3cm. Due to the difference between light and display, there is a certain color difference, which depends on the actual object received