Packing: 2 pairs(4 laces)reflective round shoe string per order(when you put quantity "1",means you will get 2 pairs of shoelaces); Shoelaces Diameter:about 4/25 inches(0.4cm);Shoelaces Material:polyester + reflective material;The length of error range:2-3CM(these shoelaces were measured and cut by mechine,it can have 2 to 3cm differences);Safety highlight reflective shoelaces can reflect sunshine and strong light,especially at night.In entertaining places such as parties,the reflection from lights on shoelaces can attract attention from other people; There are many kinds of lengths and colors available.See picture,with reflective,fashional!These reflective shoe laces round fit for sport shoes,casual shoes,trainer sneaker,running shoes,basketball shoes,tennis shoes,hiking shoes,volleyball shoes,safety shoes etc; These fashion round soft rails style reflective highlight shoelaces are in line with international standards and it is environmental protection;Strong and sturdy shoelaces,featuring 3M reflective threading,each shoelace features a bright silver reflective material,great for those who enjoy running or doing exercise at night and want to remain visible and safe; The best way to find the length of shoelace you need:remove the current shoelace from the shoe or boots,then measure it from tip to tip.This is the length for the new shoelace - keeping in mind to add or subtract the length to your new laces if your old laces are too long or too short;Note:because of the light effect of displays of different computers,actual colors may vary from the color on your screen !