The ergonomic relaxed fit XF Series laces are a favourite for ease of use and comfort. 
 
The XF Series features a flat lace with a self-forming TAPERED flat knot design, making XF laces the easiest to lace-up and adjust in the Xtenex Accu-Fit Lace Series. The flat knot design blocks the lace from involuntary lace migration and holds a custom ergonomic fit to your feet.
 
XF offers a more traditional lacing experience but delivers the functionality and benefits of Accu-Fit lace technology by adjusting the compression fit at each eyelet.
 
XF-Series compression laces service an eyelet diameter size from 2 to 3mm.