There is something both romantic and contemporary in the simplicity of the naked bulb, believes designer Mattias Ståhlbom, a partner in the internationally acclaimed architecture-design studio TAF, who celebrates the "essence" of the lamp- the socket -in a model he dubs E27 for the Danish house Muuto. We couldn't agree more. We installed three in our kitchen, two grey and one pop of yellow to great effect. The colorful silicone rubber cord extends to 4 meters (13.12 feet). Bulb diameter is 130 mm (about 5 inches).