Lengthwise Grain runs along the length (yardage) of the fabric. Runs parallel to selvedge. Crosswise Grain runs along the width of the fabric. Runs perpendicular to selvedge. Bias runs along a 45 degree diagonal angle to the grain, and is usually a bit stretchy. Selvage / Selvedge is the manufactured edge of the fabric that usually has rows of holes.   Right Side(RS) is the