This backpack is made of durable 210D polyester with front zipper pocket and built-in ear buds slot (this item excludes earbuds). Drawstring closure,reinforced grommets and woven drawstring cord. More information, please send your detailed requested for quotation. Measuring 1.57 inches in Dia., this custom drawstring backpack with zipper. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Portable, durable, practical for daily use.