The new SKB Injection Molded 49-Key Keyboard Case is a part of the I-Series of waterproof cases. I-Series injection molded waterproof cases are constructed of ultra high-strength polypropylene copolymer resin and feature a gasketed, waterproof and airtight, submersible design (IP67) that is resistant to corrosion and impact damage. The SKB Waterproof Key Board Case features continuous molded-in hinge, patented "trigger release" latch system, TSA accepted and approved locks, comfortable, snap-down rubber over-molded cushion grip handle, secure stacking, and automatic ambient pressure equalization valve all contribute to its military grade design. The SKB Keyboard Case features a combination foam/cleat interior, which holds the instrument securely during transport. Adhesive backed foam in the lid also secures the keyboard. The SKB Keyboard Foam Case features built-in wheels, offering tilt-and-go transport, and is water resistant making it excellent protection for your keyboard.