Unexpected thing, the transistors I worked with were anything but stretchable.
Transistor Stretchier Than Skin for Ultra-Flexible Wearable Tech By New Scientist
Stanford University researchers have developed a new transistor that can be stretched to twice its length without losing conductivity, making it well-suited for use in small devices worn on the body.
"In the near future we will be able to make wearable electronics that are stretchable and able to conform to the human body," says Stanford professor Zhenan Bao. .... "