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.
3M ADHESIVE: Pen loop holder has premium 3M adhesive for excellent adhesive experience so it won't fall off from notebook easily.
SUPER ELASTIC: Loop is made of super elastic rubber, so you don't need to worry about your pen dropping from the loop.
Color is random but I will try to match up a color that coordinates with the planner you choose.