These darning needles are particularly well-suited for darning and repairing cotton garments. They are long, yet not fragile, and have a sharp tip that glides smoothly through the fabric.
Size 1/5 is somewhat large and suitable for thicker cotton fabrics, and the largest needle eyes can be used with embroidery floss, while for the smaller ones, it might be beneficial to split the embroidery floss or darning thread to make it narrower.
Size 3/9 is narrower and suitable for slightly thinner cotton, such as shirts and similar items.