DROPS Baby Merino - superwash treated extra fine merino wool yarn. DROPS Baby Merino is a 100% extra fine merino wool yarn that's super soft, breathes well and is itch free - perfectly suited for delicate baby skin. Cable spun and constructed from multiple thin strands, DROPS Baby Merino gives neat, even stitches, resulting in garments with extra elasticity. It’s this special construction that makes it important to use the correct tension in your project, so use a tight tension rather than a loose one.