The Profoto 51" large Deep White Umbrella has a soft white interior that helps produce even, diffuse light with soft shadows. The increased depth of this model allows for more precise control over the spread of the light. Also, it features 16 fiberglass rods for a rounder shape and more even light spread. It is made of heat-resistant materials and the metal elements are surface treated to prevent rust and discoloration. Additionally, this umbrella comes with a fabric carrying bag for travel. An optional diffuser (sold separately) allows you to transform this umbrella into a softbox.