The indigo r2 seated leg curl indigo fitness was formed in 2014 by the merger of indigo23 and leisure lines indigo specialises in equipment for weightlifting strength and conditioning all strength equipment is designed and manufactured at their factory right here in the uk the seated leg curl works the hamstrings from the seated position and is less intimidating than the prone leg curl key features of the indigo r2 seated leg curl spring assisted seat mechanism adjusted with one hand from