Conventional sails comprise panels, which are most often stitched together, at other times adhered. There are two basic configurations, "cross-cut" and "radial". "Cross-cut" sails have the panels sewn parallel to one another, often parallel to the foot of the sail, and are the less expensive of the two sail constructions. Triangular cross-cut sail panels are designed to meet the mast and stay at an angle from either the warp or the weft (on the bias) to allow stretching along the luff, but minimize strutting on the luff and foot, where the fibers are aligned with the edges of the sail.