Exterior Dimensions 53.8 x 16.5 x 6.7" (136.55 x 41.91 x 17.02cm) Interior Dimensions 50.5 x 14 x 6.0" (128.27 x 35.56 x 15.24cm) The Pelican iM3300 Storm Case is an injection-molded case made of HPX high performance resin, that is virtually unbreakable, dent-resistant and shatter-resistant. It is tough, rugged, lightweight, airtight and watertight. There is a permanently attached Vortex valve that automatically adjusts air pressure without letting in water, and won''t unscrew from the case. Press & Pull latches open with the push of a button, yet stay closed securely under impact or stress. The case has unbreakable molded-in hasps that allow the addition of standard size padlocks. It has hinges with integrated feet that hold fast under impact, and create a flat surface for upright stability. It is carried by a double-layered, soft-grip, solid-core handle that provides strong, durable comfort. This case has a multilayer foam bottom and a convoluted foam pad in the lid.