Here's how you make it.
Choose a soft yarn. This is Hobby Lobby I Love This Yarn with an accent yarn as the last row. I used less than 2 full skeins at 5 oz./251 yards per skein. The accent color will need less.
Using a Size I hook (or whatever is recommended by your yarn) start your chain loosely. End your chain at *least* a good 6-8" shorter than you want your finished product. The additional stitches add some length, and the scarf gets very heavy and stretches itself.
Row 1: 2 dc in 4th ch from hook and in every ch across.
Row 2: Ch 3, dc in same stitch; 2 dc in every stitch across.
Row 3. Ch 3, dc in same stitch; 2 dc in every stitch across; change to accent color.
Row 4: Ch 1, sc in same stitch; 2 sc in every stitch across. Finish off.
I've linked here: