I use batting inside the straps, cut a little less than half the width. Press together down the center-right side up. Press 1/4 inch in on both sides or leave the selvage edge on one side and press the other side. Now bring the selvage edge over, then the other side lapped over that. Pin. Sew narrowly along each side of the strap and sometimes down the middle. The batting gives them firmness and softness all at the same time. I have never minded the look of stitched straps. So much easier.