Iowa State University develops meta skin

Researchers at Iowa State have developed a flexible meta skin that significantly out performs current stealth materials. They put rows of split ring resonators embedded inside layers of silicone sheets, the result is a skin that is tunable. By stretching it the rings are more spread out, and affect different frequencies. It's estimated that this skin traps 75% of radar every in the 8-10 ghz range, from all angles.

www.news.iastate.edu/news/2016/03/04/meta-skin