PBL Photo Studio 40in Reflective Umbrella Softboxes Set of Two Steve Kaeser Photographic Lighting Two (2) PBL 40in Softbox Reflective Umbrellas Very soft, even lighting. Interior is made of silver reflective material. Light is reflected back through white diffusion material that creates very soft light Sets up just like an umbrella in seconds No need to worry about losing parts, one piece unit. Large opening with elastic and zipper that allows this umbrella softbox to fit onto any strobe flash NOT INTENDED FOR USE WITH CONTINUOUS LIGHTS,STROBES ONLY