Watertight, crushproof & dustproof ; Open cell core with solid wall design; O-ring seal ; Automatic pressure equalization valve; Stainless steel hardware ; Pick N Pluck(TM) with convoluted lid foam ; Interior dim: 7.29"L x 4.78"W x 3.33"D; Exterior dim: 8.41"L x 6.76"W x 3.87"D; Weight: 1.43lbs; Lifetime Guarantee of Excellence;