Made Of Polycarbonate With Interior Polyethylene Foam Liner | Stainless-Steel Hinge And Latch Pins | Locking Holes: 0.1875″ (3/16″) Diameter | Waterproof Up To 90 Feet For 30 Minutes | Pressure Release Slot | Utility Mounts To Easily Attach Carabiner or Tether | Integrated Feet Allow For A More Secure Base or Stacking. Approximate Size: 8 3/10″ W x 2 3/5″ H x 5 1/10″ D , Imprint Area: 6.48″ W x 2.37″ H