In the process of developing shock-absorbing material for hail protection, we were reminded of the high hurdles.- The thickness of the material must be as thin as possible so that it does not take up much space when folded.- It must also be lightweight so that it can be easily handled by one person.- It must be easy to install quickly when the weather becomes ominous or a hail warning is issued.- The selling price must be as low as possible so that it can be distributed worldwide.- Above all, it must have a definite effect. (Impact force must be kept below 300N)Even so, WazaCover achieved a 100N impact test on four types of test pieces. Of course, this number is a number that does not dent the car body. We will continue to conduct further research toward practical use in the future.