High-tech apparel brand Vollebak has released the Solar Charged Puffer, a jacket for extreme environments that builds on its original solar charged jacket, launched in 2017. Pure white during the day, the jacket glows in the dark when exposed to light, changing from bright green to soft white after about 12 hours. Built in layers made of a fiber blend for extreme warmth, the jacket is also waterproof and windproof. The core technology is the second layer, an ultrathin membrane just below the surface of the jacket engineered with a phosphorescent compound, which rapidly stores light and re-emits it slowly. Photo: Vollebak.