This boxed set of metallic foil Christmas light reflector collars was made by Doubl Glo in the 1950s. Inside are eight reflectors in bright pink, red, magenta, and silver. They're 3 to 3-1/2 inches diameter, designed to fit between the bulb and socket on Christmas tree light strings to enhance and reflect the light. Three reflectors have a little spots or flecks of snow flocking, otherwise they're in excellent vintage condition, all with cardboard center fittings intact. The box is also in excellent condition with no tears.