To obtain a braided string visible by other person by the outside light at night and useful as a suspension string for an alarm whistle or a flashlight by weaving a thin strip of a fluorescent material or a reflection material in tubular form and covering the circumference of an elastic core material with the tube.

The objective string 13 is produced by covering the circumference of an elastic core material 10 made of a polyester filament, etc., with a tubular member 12 produced by knitting a thin strip 11 of a fluorescent material or a reflection material in tubular form. It can reflect the light or emit fluorescent light by the light of the headlight of an automobile to enable easy recognition by the third person.