TRIM FOR SIZE
1:Tuning the Groove Box at the cross position to Bukcle,then using thin screw-driver or nipper to oppening the Groove door from the hole;
2:Taking the strap out from the buckle and Cutting the strp for you desired size;
3:Putting back the sized strp into the buckle and close the groove while keeping it at cross position to buckle;
4:Turning back the groove box to parallel position;