---
title: "Crotch Back"
---

The percentage of the seat circumference that the back crotch needs to occupy. This creates more or less space between the side seam and the back.

## Effect of this option on the pattern

![This image shows the effect of this option by superimposing several variants that have a different value for this option](waralee_crotchback_sample.svg "Effect of this option on the pattern")