Packing: 2 pair (4 laces) double layer flat thick shoelaces per order (when you put quantity "1", means you will get 2 pair of shoelaces); Shoelaces width: 8mm; Thickness 2.5mm; Shoelaces material: polyester; The length of error range: 3-5cm (these shoelaces were meassured and cut by mechine, can have 3 to 5 cm differences); There are 3 kinds of lengths and 12 kinds of colors are available, see picture, with nice pattern, fashiona. Excellent choice for running, jogging, casual & fun shoes, add some color to your life, compatible with all kinds of fashion sports shoes, casual shoes etc. The shoelaces features: precision compiling process thickening double layer design, texture double color twill; Transparent shoes to take the lead , can restore shoelaces are color strong and easy to use; High quality color polyester yarn, not late staining shoelaces higher technology, guarantee fastness, shoes don't rub off not dyed. The best way to find the length of shoelace you need: Remove the current shoelace from the shoe, measure it from tip to tip, this is the correct length - to add or subtract to your new laces if your old laces are too long or too short.