Watertight, crushproof, and dust proof. Easy open Double Throw latches. Open cell core with solid wall design - strong, light weight. Automatic Pressure Equalization Valve. Comfortable rubber over-molded top and side handles. Stainless steel hardware and padlock protectors. 2 level Pick 'N' Pluck™ with convoluted lid foam. Unconditional Lifetime Guarantee of Excellence. Retractable extension handle. Strong polyurethane wheels with stainless steel bearings.