A simple and effective, that Valentina Trimani: looking for new applications of OLED technology, the designer has designed a bookmark that allows light to read well in the dark. The light emitted by Lightleafs, in fact, gives full visibility of the page (only doubt: the beam tip in the eyes?), With minimal disruption to the people around us, should try to sleep. Thin (almost) as a page, Lightleafs is rechargeable and runs without cable, and also prove useful especially in contexts where access to electricity is foreclosed.