Girth is a marking that conceptually behaves similarly to Collar, but creates a band that goes around the torso between the front and hind legs, and up into the underwings. The minimum width of Girth is a thick band around the midsection. Girth may cut off abruptly at the underwings. Girth does not actually go across the back, but it must wrap around the belly completely.

Girth can have a hard edge or a soft edge, or can combine a hard edge and a gradient edge, or a soft edge and a gradient edge on either side of the band.