Case Dimension Internal Dimensions: 16.5 x 12 x 3 inches (42*30.5*7.5 cm) (L x W x H); External dimensions: 17 x 13 x 5 inches 43*33*12.5 cm ,Weight: 4.25 lbs Customized DIY Foam The foam has been cut in advance. You can DIY the appropriate size according to the size of the item and put it in the middle of the sponge, the foam keeps your valuables protected from the shocks and bumps on the road. Premium Aluminum Alloy Construction This sturdy and durable carrying case has a hard aluminum alloy build exterior and it is interior has an impact absorbing form wall border to protect your gears from sudden drops and impacts. Security Key Equipped with keys. The hard case can be locked If necessary. Compared with those without a key, we can provide more security for your valuables.