Minerva Air Mesh Panel M This is a removable panel designed to improve ventilation on the back of a backpack, preventing stuffiness in the summer. It is a complete product with a cord lock. ___Excerpt from HP___ The mesh material used in this panel is a honeycomb mesh that has been researched and developed for medical use over many years. Nylon filament threads are passed back and forth between two mesh layers to act as pillars, creating space and facilitating airflow. The mesh material is pre-dyed, so the colorfastness to water and sweat is rated at 4-5, maintaining a high standard. It can be washed, so you can always keep it clean. Material: 3D Mesh / Polyester, Nylon Made in Japan #Outdoor #Fishing #Mountaineering #Hiking #Backpack #SummerFestivals #Mesh