Like sewing tips? If you want to know all about stretch needles check out this sewing tutorial that is focused on the following questions: what is a stretch needle for sewing? Do you need a stretch needle? Why use a stretch needle? The stretch needle works excellent with swimwear, stretchy knits, all elastic materials. Visually, this needle has a shorter eye than a standard needle, a special flat shank, a deep scarf and specially designed to prevent skipped stitches on stretchy fabrics.