Lambswool is wool taken from a sheep's first shearing, carried out when the animal is less than seven months old. Because the fiber has never been cut before, each strand retains its naturally tapered tip — the point at which it originally grew from the skin. This taper is what gives lambswool its characteristic softness compared to wool shorn from adult sheep, where repeated cutting leaves a blunt, coarser end.
Where Does Lambswool Come From?
Lambswool is produced globally wherever sheep farming is established, with significant production in the UK, Australia, New Zealand, and South Africa. Unlike alpaca — which is geographically concentrated in South America — lambswool is one of the most widely available natural wool types in the world.
The fiber is graded after shearing based on fineness, length, and quality. First-shearing wool is classified separately from adult fleece due to its distinct properties. For technical fiber grading standards, the International Wool Textile Organisation (IWTO) maintains the global framework for wool classification.
What Makes Lambswool Different from Regular Wool?
The defining characteristic of lambswool is its naturally tapered fiber tip. In adult sheep, each successive shearing cuts the fiber at a blunt cross-section, producing a stiffer end that can feel scratchy against skin. In lambswool, the original tip is intact — finer and more flexible, which is why the fiber feels noticeably softer than standard adult wool even at a similar micron count.
Lambswool also has a natural elasticity that comes from its tight crimp structure. This allows it to stretch and return to shape, making it resilient to the wear and compression that comes with regular use. Blankets and knitwear made from lambswool tend to hold their form well over time.
Key Properties of Lambswool
Softness
Softer than standard adult wool due to the intact fiber tip, though typically less fine than superfine Merino or high-grade alpaca. It is comfortable for most people in home textile applications such as blankets and throws.
Warmth
Lambswool's crimp structure traps air effectively, providing strong insulation. It is one of the better-performing natural fibers for cold-weather blankets, sitting above cotton and most synthetics in thermal capacity.
Elasticity
The natural crimp gives lambswool excellent recovery — it bounces back after compression and retains its shape through repeated washing and use better than many other wool types.
Moisture management
Like all natural wool, lambswool absorbs moisture vapor from the surrounding environment and releases it, helping to regulate temperature and maintain comfort across changing conditions.
Dyeability
Lambswool accepts dye readily and evenly, producing rich, consistent color. This is why it is frequently used in woven blankets with structured patterns, checks, and plaids where color fidelity matters.
Lambswool vs Merino: Key Differences
Both are sheep's wool, but they come from different breeds and serve somewhat different purposes.
Merino wool is defined by its exceptionally fine fiber diameter — typically 15 to 24 microns — which makes it the softer of the two against skin. Merino is also more versatile across seasons due to its superior breathability and temperature-regulating properties. It is the preferred choice for next-to-skin use and lighter textile applications.
Lambswool is generally slightly coarser than superfine Merino, but its natural elasticity and warmer hand feel make it well-suited to heavier blankets and structured woven goods. It also tends to be more widely available and less expensive than fine Merino, making it a strong value proposition in the premium natural fiber category.
For a full overview of Merino's properties, see: What Is Merino Wool? Everything You Need to Know.
Lambswool vs Alpaca: Key Differences
Lambswool and alpaca occupy different ends of the wool spectrum in terms of weight and warmth delivery.
Alpaca's hollow fiber structure gives it a higher warmth-to-weight ratio than lambswool — meaning an alpaca blanket can provide equivalent or greater insulation at a lighter weight. Alpaca is also lanolin-free, making it the better choice for those with wool sensitivities. Lambswool contains lanolin, which contributes to its natural water resistance but can cause reactions in those with a lanolin sensitivity.
Where lambswool has an advantage is in structure and elasticity. Its tight crimp gives woven lambswool blankets a body and resilience that alpaca — with its smoother, less crimped fiber — does not replicate as naturally. For classic woven blanket constructions, lambswool's structural properties make it particularly well-suited to the format.
For a direct three-way comparison, see: How to Choose the Perfect Wool Blanket: Lambswool vs Alpaca vs Merino.
How to Care for Lambswool
Lambswool requires the same gentle handling as other fine wool types. Wash in cool water with a wool-specific detergent, either by hand or on a wool or delicate machine cycle. Do not wring, tumble dry, or expose to high heat. Dry flat to preserve the blanket's shape and dimensions.
Full care guidance for all wool types is covered in: The Ultimate Guide to Caring for Your Wool Blanket.
Frequently Asked Questions
Is lambswool softer than regular wool?
Yes. The naturally tapered fiber tip present in first-shearing wool produces a noticeably softer feel than standard adult wool, where repeated cutting leaves a blunter, coarser fiber end.
Is lambswool the same as Merino?
No. Lambswool refers to first-shearing wool from any breed of sheep; Merino refers specifically to wool from the Merino breed, defined by its fine fiber diameter. A Merino sheep's first shearing would technically produce both lambswool and Merino wool simultaneously, but the two terms describe different things.
Is lambswool itchy?
It can be, for some people — particularly those sensitive to lanolin or coarser fiber textures. Lambswool is softer than standard adult wool but is generally not as fine as superfine Merino. Most people find it comfortable in blanket form, where it is not in direct contact with skin for extended periods.
Does lambswool shrink?
Yes, if exposed to heat or agitation. Like all wool, lambswool will felt if washed in hot water or tumble dried. Cool water washing and flat drying prevent shrinkage.
Is lambswool sustainable?
Wool is a renewable, biodegradable natural fiber — lambswool included. Sustainability credentials vary by producer and farming practice. The Responsible Wool Standard (RWS) provides a verified framework for ethical and sustainable wool production.
Our Lambswool & Cashmere blankets combine the natural warmth and resilience of first-shearing lambswool with the softness of cashmere.