This is an Interfit 39" (99 cm), Translucent Umbrella. A translucent umbrella may be used to soften light by bouncing light into it, or by "shooting" the light through it. By shooting through, light loss is only ~1 f/stop.
Use this size umbrella for a 1 - 2 person half-length portrait.
INT261 Translucent Umbrella - 39" (99 cm)
One Year Manufacturer's Warranty