Seam Align glue is designed to gently hold two pieces of fabric together to prevent shifting. It will not leave a ring around the needle or mess up your sewing area. There is no hard dot of glue for a needle to hit and deflect. It is totally water soluble and non-toxic. It is water soluble and sets quickly with an iron. It makes it easy to create super-straight lines and precise seams, making it an excellent choice for plaids and stripes.