G-Nautics Cockpit Bags, in tough PVC with a breathable mesh bottom, will keep your navigation charts and books close at hand when you need them and protected from the elements when not in use. A, simple to attach and detatch, Velcro fastening system means no drilling, nasty marks or permanent damage. Cockpit Bag PVC with PU mesh bottom Velcro Fixtion system No drilling or permanent damage Size, Medium Dimensions 35 x 30 cms Size, Large Dimensions 40 x 35 cms