In article number 1805296, Kenichi Oyaizu, Hiroyuki Nishide, and co-workers report 100 nmthick, organic robust redox-active polymer/carbon nanotube hybrid nanosheets as rechargeable power sources. The use of the mechanically robust yet intrinsically soft nanosheets enable the fabrication of organic polymer-based batteries with only 1 μm thickness and stretchable properties. The devices are highly conformable to skin surfaces.