Q&A_Pant Crotch Depth for front & back

Q: Is your rule about back crotch depth being twice as much as the front and distance of back crotch point below front crotch point applicable to all sizes/genders/ types of bottoms?

A:

The rule about the back crotch depth being about twice the front is a general starting point for basic pant blocks. It helps create room for the shape and movement of the body, especially around the seat area.

That said, it does vary depending on body shape, garment style, and fabric:

If the person has a fuller, more rounded seat or you're making looser styles like boxy or baggy pants, the back crotch depth often needs to be even more than double.

For flatter seat shapes or tight-fitting styles like skinny pants or leggings (especially with stretch fabrics), the back crotch depth will be less — but still always greater than the front.

As for the vertical position of the crotch points: the back crotch point is typically level with or slightly lower than the front crotch point, depending on the inseam length. It should never be higher.

The core balance principles for pants can be applied and adjusted for both men and women, across various sizes. However, the most important factor is the individual's body shape, which should be assessed and refined through the fitting process.