Merino and lambswool are both prized for soft, warm knitwear — but they aren't the same. Here's how to tell them apart and pick the right one.
What is merino wool?
Merino comes from Merino sheep, known for unusually fine fibres (often 17–24 microns). Finer fibres mean a softer feel against the skin, good breathability and natural temperature regulation — warm in winter, comfortable indoors.
What is lambswool?
Lambswool is the very first shearing of a young lamb, usually before seven months old. That first clip is exceptionally soft and elastic, with a slightly fuller, more matte hand-feel than merino.
How to choose
Choose merino for next-to-skin softness, lightweight layering and easy care. Choose lambswool for a plush, springy warmth and a more traditional knit. Both resist wrinkles and hold their shape well when cared for properly.
Caring for both
Hand wash cool or use a wool cycle, never wring, and dry flat to keep the shape. Store folded, not hung.
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Which is warmer, merino or lambswool?
Both are excellent insulators. Lambswool's first-shear fibres are springy and trap slightly more air, giving a plush, cosy warmth that feels great in deep winter. Merino is finer and breathes better, so it regulates temperature — warm outdoors, comfortable indoors — which makes it ideal for layering and all-day wear.
Which pills less and lasts longer?
Pilling depends more on fibre length and knit quality than on the type of wool. High-grade merino with longer staple fibres and a tighter knit resists pilling well; lower grades can pill at friction points. Lambswool is naturally elastic and holds its shape. With gentle washing and proper storage, both last for years.
Price and value
Merino usually costs a little more because the ultra-fine fibres are softer next to skin. Lambswool offers wonderful warmth for the price. Neither is "better" — it comes down to how and where you'll wear the sweater.
FAQ
Is merino warmer than lambswool?
Lambswool feels slightly warmer for its weight, while merino regulates temperature better and is easier to layer.
Is lambswool itchy?
Quality lambswool is soft, but it can feel fuller than merino. If you have sensitive skin, fine merino is usually the most comfortable choice.
Which is better for sensitive skin?
Merino — its fine micron count means far less prickle against the skin.