Watertight, crushproof, and dust proof Easy open Double Throw latches Open cell core with solid wall design - strong, light weight O-ring seal Automatic Pressure Equalization Valve Fold down handles Stainless steel padlock protectors 3 level Pick 'N' Pluck with convoluted lid foam Personalized nameplate service available Unconditional Lifetime Guarantee of Excellence Retractable extension handle 4 strong polyurethane wheels with stainless steel bearings