senz° the original storm umbrella It did take a couple of thousand years since the umbrella was first invented, but finally senz° came along. Senz° has reinvented the umbrella to your advantage. Thanks to its asymmetrical shape, the senz° umbrella simply floats through any storm. We use recycled and reusable materials as much as possible. But what makes a senz° truly sustainable is that it is so strong that it lasts for years.