Promaster 6378 37mm Digital HD Circular Polarizing Filter Tripods the Profoto Softbox Rectangular is

the Profoto Softbox Rectangular is incredibly easy to set up and with a quick fold/unfold solution

and confidence in flash modification

Compatible with following cameras:

Quick check

Promaster 6378 37mm Digital HD Circular Polarizing Filter Tripods the Profoto Softbox Rectangular isFeatures: PROMASTER DIGITAL HD CIRCULAR POLARIZING FILTERS increase color saturation and reduce reflections. The neutral gray HD polarizing material guarantees excellent images while minimizing loss of light. Constructed with premium Schott optical glass these filters are designed to yield extreme image sharpness. They also feature a precision machined, super slim aluminum frame with anti reflective matte finish and knurled edges.