The 1R6218WY for the Yamaha CP1 and CP5 Stage Pianos is designed for keyboard players who are looking for the best protection for their delicate musical instrument. It is rotationally molded from Linear Low Density Polyethylene (LLDPE), offering high durability and strength and features SKB's proprietary glass reinforced nylon trigger latches with TSA locks, enabling musicians to safely lock the case and still have it inspected by airline security personnel. SKB is the only case manufacturer to utilize this technology. The 1R6218WY features a combination foam/cleat interior, which holds the instrument securely during transport. Adhesive backed foam for the interior lid is provided loose, so the musician can customize the fit of the case to match the keyboard. Special, reinforced bridging in the lid gives this case the strength to withstand the most demanding tours. This 88 narrow size case is designed for the Yamaha CP1 and CP5 Stage Pianos This case features built-in wheels, offering tilt-and-go transport, and is water resistant making it excellent for inclement weather.