Flexon frames return to shape even after accidental bending or twisting, making them very "kid-friendly". Crafted with a titanium base alloy developed by the U.S. Naval Ordnance Lab, Flexon frames are made from one of the most flexible metals on the planet. Marchon holds four exclusive patents for Flexon. These memory-metals have also been used in jet aircraft construction, NASA research, super-computer electronic connectors, and experimental medical products.