Indigo 2m x 3m free standing platform has the strongest steel outer frame indigo fitness was formed in 2014 by the merger of indigo23 and leisure lines indigo specialises in equipment for weightlifting strength and conditioning designing and manufacturing station strength equipment at it s factory right here in the uk key features of the indigo 2m x 3m free standing platform rapra tested to a critical fall height of 3m 60mm thick platform steel outer framework solid oak centre provides rock