The Nelson Ball Bubble Pendant is a full, perfectly round sphere that fills any interior with a warm, diffused light. A steel ceiling plate allows it to delicately float overhead. George Nelson was inspired by a set of silkcovered Swedish hanging lamps when he originally designed the Bubble Lamp series in 1952.Size: Ø: 32,5 X H: 30,5 cm MATERIAL:WEBBING POLYMERCORD:183 cmBULB:NOT INCLUDEDDIMMABLE:YesSWITCH:NOIP:20Normal Cleaning: Use a feather duster, a clean soft white cloth, or vacuum with a clean soft brush attachment as needed. For stubborn stains, clean the surface using a clean soft white absorbent cloth with a solution of mild soap and warm water. Wipe down surfaces with the damp cloth and dry with a clean soft white cloth. Make sure cleaning materials are free of grit and other foreign materials. Avoid using glass cleaners, abrasive cleaning compounds, ammonia, or bleach; they may damage the surface of the plastic and result in discoloration.