KWS-2 is a pinhole SANS diffractometer optimized for the investigation of complex morphologies and rapid structural changes in soft-matter and biophysical systems. The instrument enables the exploration of a broad Q range between 1.0x10-4 and 2.0 Å-1 offering high neutron intensities and adjustable experimental resolution in continuous or TOF mode based on the instrument's optimized neutron guide system, versatile velocity selector, and main double-disk chopper. The wide Q range is covered by the combination of pinhole mode with the main 3He tubes MHz detector, high-resolution (low Q) focusing mode with MgF2 lenses and secondary HRD (scintillation), and wide-angle detection mode with additional WANS-3He tube detectors that collect neutrons scattered up to a scattering angle thetas = 53° in either continuous or TOF acquisition mode to bridge the atomic and mesoscale at the instrument. Up to twelve-fold enhancement of the intensity on the sample by the MgF2 focusing lenses and the large sample size while maintaining the same resolution (low Q) as in pinhole mode enables reliable measurements under unfavorable contrast or sample stability conditions. A dedicated suite of sample environments is available, for in-beam purification (SEC), shear (rheometer), rapid mixing (stopped-flow), deformation (stretching device), low-temperature (cryostat with sapphire windows), hydration (versatile SANS-specific dew point generator and humidity chamber) and ion transport (conductivity cell). In-situ light absorption complementarities (IR spectroscopy and UV-Vis spectroscopy) are also available for simultaneous analysis of the sample with SANS. The performance and special capabilities of the instrument for research on polymer systems under different conditions is presented.