Watertight, crushproof, and dustproof, Open cell core with solid wall design - strong, light weight, Automatic Pressure Equalization Valve - balances interior pressure, keeps water out, O-ring seal, Comfortable rubber over-molded handle, Stainless steel hardware and padlock protectors, 2 level Pick N Pluckâ„¢ with convoluted lid foam, Personalized nameplate service available, Lifetime Guarantee of Excellence, INTERIOR (L X W X D) 21.51" x 16.54" x 7.99" (54.6 x 42 x 20.3 cm), EXTERIOR (L X W X D) 24.39" x 19.36" x 8.79" (62 x 49.2 x 22.3 cm)