The trouser hems sit neatly above the shoes, yet the waistband pulls when you sit down. Shortening or lengthening the leg will not necessarily solve that problem. Inseam and rise describe different parts of the garment.
Follow two different measurement paths
The inseam follows the inside leg from the crotch seam to the hem. FIGS’ size and fit guide suggests using a well-fitting pair of trousers to take this measurement and choosing the appropriate available leg length.
Rise concerns the measurement from the crotch area towards the waistband; front and back rise are distinct garment measurements. Check the seller’s diagram for the exact endpoints it uses. A label such as high-rise describes a style, but it is not a universal numerical measurement shared by every brand.
Compare like with like
Lay a comfortable pair flat without stretching it. Record the inseam using the same path shown in the new garment’s guide. If rise measurements are supplied, compare them using that guide’s method too. Keep body measurements separate from measurements taken directly on clothing.
A jogger cuff and an open hem may sit differently even with similar inside-leg lengths. Consider the intended finish rather than assuming that a familiar number produces the same appearance in every cut.
Use a short movement check
When trying the trousers on, sit, stand and make the ordinary movements your role requires. Check whether the waistband stays where you expect, the seat feels restricted or the hem catches beneath the shoe. Test pockets with a representative light load if the retailer’s fitting and return conditions allow it.
Write down where the discomfort occurs before changing size. “Leg length is right, but the back waistband pulls when seated” gives a retailer much more useful information than “these feel too small.”
The aim is a fit that works through a shift. Separating leg length from the waistband-to-crotch relationship helps you choose a different cut when that is what the problem needs, rather than repeatedly ordering another length.