Made of durable Polyester which could ensure the backpack lasts for a long. Main compartment with double-zipper closure. One exterior zipper pocket. This backpack is perfect to be a daypack. Perfect for going to school, work, weekend getaways, biking, camping, gym, travel, etc. Compact but spacious for all school supplies and daily essentials. A damp rag can write away most spots. Water-resistant that repels rain. Solid color to alter/draw on/for DIY projects. At 0.4 pounds only, this lightweight book bag will never weigh you down while providing padded & comfortable support.