Product details: Excellent choice for running shoes/tennis shoes/sneakers/boots... Perfect replacement shoelaces and they have stretch a little. The stretch of the laces isnt too excessive and thats perfect for running shoes/tennis shoes/sneakers/boots. The thickness is also perfect for most shoes as well. Please do not worry about the durability,they will work out perfectly and will be very durable and they are even better than the originals There are 3 Kinds of Lengths and 7 Kinds of Colors are Available,This is Non-slip Half Round Shoelaces, Very Suitable for Shoes for Outdoor Sportsman With Nice Pattern, Fashional The Half Round Shoelaces with Elastic and Strong Pull Design,Fine Texture,Multi-line Tightly Woven Fashionable and Non-slip ,It is Not Easy to Loose in Running and All Kinds of Strenuous Sports; S pecification: Color: Black, White, Light Gray, Dark Gray, Pink, Red, Sky Blue Size: 60cm(23.62inches)/80cm(31.49inches)/100cm(39.37inches) What's In The Box: 2 Pair x Oval Shoes laces Packing: 2 Pair(4 Laces)(when you put quantity "1",means you will get 2 pair of shoelaces); Multi-line Tightly Woven Fashionable and Non-slip ,It is Not Easy to Loose in Running and All Kinds of Strenuous Sports; The oval athletic shoelaces for kids or adults are ideal match of athletic shoes/running shoes/sport shoes/tennis shoes/sneakers/boots etc. The athletic shoe laces have 7 colors design and many different lengths are available,texture fine The best way to find the length of running sport shoe laces oval is 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.