Soft-Touch Latching System Metal Reinforced Padlock Holes Rubber Cushioned Front Handle Removable Discs for Longer Lenses Lid Stay Prevents Accidental Closure Automatic Pressure Equalization Valve Waterproof, Crushproof and Lightweight Complies with FAA Carry-On regulations Auto-Retracting Rubber Cushioned Top Handle Mil-std-810f IP67 ASTM D4169 ATA 300 Rated Premium High Density Foam with Protective Top Overlay Stainless Steel Hardware and Durable Polyurethane Wheels UV, Solvent, Corrosion And Fungus Resistant Polymer-Resin Pull Handle With Thumb Release for One Handed Extension and Retraction Two spaces can be reconfigured to accommodate accessories instead of lenses