We made this pencil case most conventional ways to keep your stationary. Single main compartment, rugged YKK size #10 zipper and reverse slider to keep it clean. Solid brass 1" D-Ring attached at the side of the pouch. Material selection from Ballistic Nylon 1680D, Cordura 1000D and 500D, Nylon Mesh See No Um and lastly we added goat leather, inside lined with Oxford Nylon 420D for all color except for mesh model. We have budget model which randomly mix and match available off cut material.