Neck Measure around the base of your neck, inserting your forefinger between the tape and your neck to allow ease in fit.
Chest Measure around the fullest part of your chest, keeping tape firmly under your armpits and around your shoulder blades.
Waist Measure around your waist, slightly below your natural waist, where you normally wear your pants. Insert your forefinger between the tape and your body to allow ease in fit.
Inseam Measure a similar pant that fits you well. Measure along the inseam, from the crotch seam to the bottom of the hem.