The Pelican 1690 Case has a unique design which incorporates a sophisticated Automatic Pressure Equalization Valve - balances interior pressure, keeps water out. The latch system allows for quick and easy access to the contents but when closed maintains a tight seal. The case itself is very durable and is constructed with a tough Co-polymer Polypropylene. Its internal space is 76.5 x 63.8 x 39 cm. The Pelican 1690 external dimensions are 84.9 x 72.1 x 44.8 cm. An overall weight of just 19.5 kg (43.00 lbs) (with Foam) makes it the durable case solution you have been looking for. This case comes with a Lifetime Guarantee of Excellence.Interior size (L X W X D) : 76.5 x 63.8 x 39 cm (30.13" x 25.13" x 15.36")Exterior size (L X W X D) : 84.9 x 72.1 x 44.8 cm (33.43" x 28.40" x 17.65")