High quality polyester, this pencil case used the smooth zipper, it is smoother and easier to open and close, comfortable to touch, the zipper is strong and wearable, safe and practical. The zippered top is perfect for keeping pens, pencils, and supplies secure. These cute pencil cases are simple and fashionable, perfect for back to school, for teenagers and adult, for all your school supplies and office accessories. Specification External Material: 900d*900d High Strength Polyester Water-Proof Coating. SBS Zipper manufactured in EGYPT