Pelican Cases are watertight and for the ultimate in protection. Constructed of lightweight structural resin with a neoprene o-ring seal and purge valve. Cases come with locking flanges; multiple latches; and fold down handles. Larger sizes include telescoping handle and wheels or wheels only for ease of use. Foamed filled cases are supplied with pre-scored, user friendly, pick-n-pluck foam except for the 1700, 1720, and 1750 which are filled with slab foam layers. Accessories include padded dividers; lid organizers; laptop computer trays; file folders; locks and panel mounts.