High-performance stretch fabric has been added to our car cover fabrics.This is the first high-performance fabric in the world that is stretchy yet durable, weather-resistant, waterproof, and color-fast.To test the functionality, fit, and usability of the fabric, we have donated a total of six sets - two sets for the Prius, two sets for the Aqua, and two sets for the Fit - to six people who agreed to participate as monitors.Please look forward to the "High Grade Cover" made with high-performance stretch fabric, which will be released soon.