Just the regular SLR no gel infusion or ass heater or shoe polisher or whatever. It doesn't have a cut out like you mean (which I think is a gimmick that lets your ass get wet), but it does have an indent there. In the indent, there is a little "window" that supposedly lets you see the carbon under the cover. It's a joke because it's a fake weave and if you've ever seen one of these saddles with the padding off, the weave is much too fine to see with the naked eye, it just looks straight black/charcoal. There is stitching around the "window" thingy but it is down in that indent thing and doesn't touch your pants in my experience. I was worried that it would from looking at it, but in practice I think it is fine.