Propper Packable Lightweight Backpack 100% Polyester Imported Durable lightweight micro ripstop nylon compresses easily Large main compartment provides storage for large items Two smaller side compartments provide additional organization Mesh bottle cage Water repellent finish 8" H x 7" W x 1" D packed 18" H x 11" W x 5" D unpacked 100% polyester micro ripstop with DWR Durable lightweight micro ripstop nylon compresses easily. Mesh bottle cage. Large main compartment provides storage for large items. 8&#034; H x 7&#034; W x 1&#034; D packed 18&#034; H x 11&#034; W x 5&#034; D unpacked. Two smaller side compartments provide additional organization. Water repellent finish.