History[]
The Fantastic Four's costumes and the rest of their wardrobe, are made of "unstable molecules". This means that the suit is attuned to their powers, which is why Johnny's costume doesn't burn when he "flames on," Sue's costume turns invisible when she does, and Reed's costume stretches with him. The costume also insulates them from electrical assaults. A full body suit was also given to The Thing but he ripped through the top half before starting their first mission using them. All the temporary members the team had wore one of these uniforms, such as the She-Hulk. Because the uniforms not only adapt to the powers of the wearer, but also have great strength, Mister Fantastic described them as the perfect outfit for a superhero.
Capabilities[]
Unstable Molecules are configuration of unknown atomic nuclei and electrons discovered or synthesized by Reed Richards, which is responsive to certain energized matter around it. Used in the making of clothing for the Fantastic Four and certain other superhuman beings, unstable molecular cloth mimics its wearer's physical properties. It can turn invisible like The Invisible Woman, stretch like Mister Fantastic and burst into flame without burning like the Human Torch.
They exist on the Angstrom edge between matter and energy and can interchange between either. These can be bonded to "Anchor" molecules and transfer any change in environment they experience to these anchor molecules. They will revert to normal when the environment does so.
The costumes made of third generation unstable molecules were designed with default patterns which could be modified by concentrating. For example, Spider-Man was able change his costume's coloring and markings, allowing him to modify his Future outfit, or to switch between it and his regular outfit.
The unstable molecules can also be altered to create an unhackable and indestructible data storage unit, such as the Omegadrive.