If you are looking for an elastic thread for use with knit, jersey or stretch fabrics then this is ideal. It has up to 80% seam stretch, and the recommended needle, is a jersey/Stretch size 70-80. It is fine for both hand or machine sewing, is machine washable to 60 degrees and can be tumble dried. Meraflex is especially suited for sewing round necklines, tight seams, cuffs on legs and sleeves, such as trousers, hoodies and joggers.