18 pack of tactile sewing strip guides, 1/4 inch wide by 12 inches long, made of sticky back felt material. These tactile seam allowance guide strips are the perfect tool to help sewists to hand-sew a consistent, straight seam without requiring good eye-sight! Just remove the paper backing on the strip to reveal the sticky side then press down right along the raw edge of the fabric to create a 1/4 inch tactile seam allowance guide. Begin hand-stitching just under the tactile guide strip being careful to feel the underside of the strip and bring your needle up through the fabric just beneath the strip. After completing your stitching under the tactile guide, simply remove the strip and re-use on your next area to sew. The strip will remain sticky for multiple uses.