Fit Immersion sport VR cardboard prototype model used on demos and exhitions till August 2017. To complete it you'll need head fixation, foam covered with sythetic leather, rubber band for phone support and 37mm lenses with 40mm focal length. Accepts smartphones with 5-6 inch screen. An action button can be added at the right side using a touch screen stylus and a spring (compatible with Fit Immersion app for exercise bikes and home trainers available Q1 2018). Weight around 200g.
Old Indiegogo campaign teaser presenting 3D model