100% polyester; StormRepel standard water-repellent finish sheds moisture so it doesnu0026#39;t soak into fabricnTwo exterior zip pockets; Four D-rings for attaching gear; Two side mesh pocketsnLightly padded shoulder straps; Interior zip compartment and velcro pocket; 18u0026#34;H x 10u0026#34;W x 9u0026#34;D (8.5u0026#34;H x 7u0026#34;W x 1.5u0026#34;D packed)nCapacity: 20L/ 1,220 cu. In.; Weight: 11 oz.nImportednBuilt for the comfort and convenience of ultralight travel, this pack is made of durable, 200-denier ripstop polyester. It offers a roomy 20 liters of cargo storage, and when it's not needed, you can stuff it down into the smaller of the front zip pockets.