The Norman WB30 is Photo Control's most compact Bounce Umbrella. The 30-inch diameter is ample for good light coverage, and is ideal for travel and in small studios where space is limited. Can be used with electronic flash and the Allure C1000 Constant Light. All white Norman Umbrellas have a removable black backing. The exposed white translucent material makes an excellent soft portrait light when used as a direct diffused light source.