The Warmest Fleece Jackets

Yes. Unlike polyester or blended fleeces, 100% merino fibres have overlapping scales containing natural lanolin that help shrug off light showers. Merino can absorb up to 30% of its own weight in moisture and still feel dry against the skin — and critically, it retains heat even when wet, which synthetic fleeces cannot.

It's the preferred choice of outdoor professionals for good reason. A merino wool jacket works as a breathable, moisture-managing mid layer that adapts to changing conditions on the hill. It's surprisingly light, naturally odour resistant, and wearable all year round - making it equally at home on a mountain trail or a city commute.

For the best care, a quick hand wash in lukewarm water at 30° or below. That said, merino wool is naturally odour resistant and shrugs off dirt, so you'll find you rarely need to wash it at all - often simply airing your jacket outside in a breeze is enough to freshen it completely.

Every Woolf PureFleece® jacket is crafted in the British Isles from 100% pure merino lambswool. We use no synthetic fibres, no blends and no recycled plastics - just pure natural merino, precision woven to our own PureFleece® specification.

Yes. Woolf PureFleece® is officially certified by the Woolmark Company - the global authority on wool quality - confirming that our garments meet the highest standards for pure merino wool. Our certification number is 0030001480.