The Midori Soft Pen Case is made of a silicone material, making it flexible and soft to the touch. The flexible squishy silicone makes it easy for you to toss the pen case in a very full bag since it can conform to a smaller space. The pen case is opened, and you can access pens and pencils by removing the silicone band and removing the top half of the pen case. The pen case fits 3-4 pens or pencils comfortably.