These needles are great for visible mending. The long needles make it easier to create long stretches of running stitches particular to sashiko and similar styles. This package has two needles, one longer and one shorter.
From the manufacturer:
Sashiko is a traditional Japanese stitching technique that was born in Northern area of Japan hundreds years ago. The ladies of farmer families stitched with cotton thread in order to retain heat well and to strengthen cotton/linen fabric. This package contains two Sashiko needles: 1-15/16in and 2-5/8in.