The practical senseBag roll-up pencil case is made from natural-colored, high-quality linen or black, washable, and durable polyester fabric. Here, you can easily roll up your favorite pens and markers and always have them with you. The pencil case can be laid flat on the table, allowing you to sort your pens as needed, insert them into the 18 red pen loops, and roll them back up. Depending on the thickness of your pens, the pencil case can be flexibly closed with the red rubber loop at the two buttons.