SunnyBAG®: Go, catch the sun.
A few years ago, when young student Stefan Ponsold was fighting the low battery status of his iPhone, the idea of a SunnyBAG was still to be hit on. The passionate do-it-yourselfer was mainly looking for a solution to recharge the batteries at any time in any place. The technician reckoned up the perfect size of a solar panel and started to sew his first - yet unnamed - solar bag. When - in course of his studies - a business plan for a product was required, he remembered his prototype: the SunnyBAG project was born.