Fieldsmith's work pants can best be described as a relaxed fit, slightly more fitted through the waist & thigh with a reasonable amount of room to move & layer underneath.

For the best fit results, find pants that fit you well. Lay them flat & measure along the inseam from crotch to bottom of leg hem, then the waist, and reference those measurements against the table below. 

All sizes in inches. 

This table acts as a guide only, measurements may differ slightly from garment to garment.