Seahorse SE830 Waterproof Protective Case Comes with Customisable Pre-Scored Pluckable Foam Set. Watertight, Airtight, and Crush Resistant Meets the FAA maximum carry on size limit Aluminum Telescoping pull handle and Two Durable easy riding wheels with metal bearings Automatic Pressure Purge System: Seahorse’s Automatic Pressure Purge System guarantees a perfect seal by incorporating its own O-Ring under one of the latches. You will never forget to set the valve since it automatically activates when closing the case. Pressure is released as you open the latch. Molded-In Padlock Holes: Each case has two molded-in padlock holes to secure your valuables. The padlock holes will accept “TSA” and most standard padlocks. Accuform Foam: Optional multilayer protective pre-scored cubed foam. Accuform Foam in Seahorse cases consists of a layer of egg crate foam in the lid, a thick cubed foam center layer, and a 1/2″ thick high density shock absorbing foam bottom layer. Exterior: 21.9 x 13.9 x 8.9″ (56 x 35 x 23cm) Interior: 19.5 x 11 x 7.8″ (50 x 28 x 20cm) Weight: 10.48 lbs. (4.76 kg) with Pre-scored Foam 9.33 lbs. (4.24 kg) Empty Shipping Weight: Approx. 12 lbs. (5.45 kg)