A	Top of chaps to crotch (Bottom of pants zipper)
B	Crotch to mid-thigh
C	Mid-thigh to knee
D	Knee to calf
E	Calf to instep or ground
F	Waist measurement at point you would like them to ride.
G	Circumference at top of thigh
H	Circumference at mid-thigh (thickest part)
I	Circumference at knee with leg slightly bent
J	Circumference at calf
K	Inseam - Crotch to ground

Please use the picture below to assist you with measuring for your custom fit chaps.  I strongly encourage you to have someone else measure you.  It is easiest to use a cloth measuring tape, but a string will work fine too.  When measuring, wear the clothes you will most often wear with the chaps; including your boots.  Please note, the style of chaps you order will determine where on your waist you will measure.  Typically, show chaps are worn a little higher than work chaps or chinks.  Please keep this in consideration when measuring!