Cardboard that enables 3D photo and video viewing and 360-degree augmented panoramic reality. Delivered to be assembled in bag. Fits almost all smartphone models, even the largest (maximum smartphone size is: 145x80mm). Durable and ergonomic construction easily adapts to the shape of the face. Plastic lens frames are available in various colors. Adjustment of the distance between the lenses Possibility of adding an elastic band. Matte or glossy foil. Protection against falling from smartphone.