Nitinol is an alloy of nickel and titanium roughly in same amount. As the name says, is an alloy that “remembers” its original shape and that when deformed returns to its pre-deformed shape when heated.
Underwired bra are a essential in wardrobe, but they always come with label “Do not machine wash”. Shaping the bra each time with hand is tedious. The shape is never the same each time.
The idea was to create a underwired bra which you can machine wash and still it retains its shape.