Very Light Proprietary Hpx2 Polymer Optimized For Air Travel Tough Double-throw Latches Automatic Purge Valve Balances Air Pressure Watertight O-ring Gasket Conic Curve Lid Shape Drop-tested On Concrete With Loads From 6ft On All Sides & Corners Submerged For 30 Min At A Depth Of 3.3ft Crushproof & Dustproof Stainless Steel Hasp Protectors Rubber Overmolded Handles Removable Polycarbonate Cardholder With Front Or Side Placement Model 1555 Internal Dim: 23"h X 12.75"w X 7.5"d External Dim: 24.76"h X 15.46"w X 8.24"d