I use a leather one made of deerskin. It has a little plastic disk that helps keep the needle from piercing your finger. I have dozens of them about my house as I sew or quilt whenever I sit for any length of time. I even wear it when mending or sewing on buttons. If I a working on a standing quilt frame I also wear one on my left thumb as I can quilt with both hands when I use that sort of frame.