Strong adhesive can stick firmly to any flat surface, make the pen loop will not fall off, no worry about losing your favorite or stylus perfect for most handwriting , calendars, journals, planners, diaries, cases, tablet case and others Elastic band is 0.5 to 0.9 inch (1.3 to 2.3 cm), perfect for holding most , pencils, stylus, etc (pen with thick rubber grips might NOT fit) Made of premium PU leather, provides comfortable Contact; you could stick to your diary, tablet case, refrigerator etc. (Pen loop holder only) Perfect for doctors, nurses, teachers, students, engineers, pilots, lawyers and etc.; Makes your work and more convenient, efficient and Colour: black Material: PU Size: 4 x 4cm Package Contents: 10 x Pen Loop Holders Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.