These round laces are designed primarily for use in hiking/walking boots. They are constructed around a strong core. The laces are designed to be slightly stretchy which allows expansion across the top of the foot for increased comfort when walking/climbing.
Diameter (Width) Unstretched: approx 4mm
Diameter (Width) Stretched: 3mm
Length Unstretched: 64 inches / 162.5 cms
Length Stretched: 72 inches / 183 cms