The Hyperspectral Imager for Climate Science (HySICS) is a reflected solar spectrometer developed by the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado at Boulder. LASP has been designing, maturing, and testing the HySICS instrument concept for more than a decade. In 2013 and 2014 LASP demonstrated the HySICS measurement and calibration approaches during two high-altitude balloon flights with a HySICS instrument prototype. The current HySICS design builds upon over a decade of LASP-led technology development and science research. HySICS will be on the CLARREO Pathfinder, and is designed to measure the spectral content of sunlight reflected by Earth in the visible and near-infrared portions of the electromagnetic spectrum.