Merino wool: what it is and what its advantages are.
In the world of natural fibres, merino wool holds a special place, as it is one of the most functional and versatile natural fibres, combining comfort, high performance and sustainability. Thanks to its unique properties, merino wool has become a popular choice among travellers, athletes and everyday clothing enthusiasts alike.
Whether you're hiking in the mountains, travelling or simply going about your daily business, merino wool can adapt to a variety of conditions. It helps maintain optimal body temperature, wicks away moisture and stays fresh even after prolonged wear.
What is merino wool?
Merino wool comes from Merino sheep - a special breed of sheep originally from Spain, but now mainly reared in Australia and New Zealand.
These sheep have been selectively bred for centuries to produce exceptionally fine and high quality wool. Unlike conventional wool, merino wool fibres are much thinner, softer and more elastic.
The thickness of wool fibres is measured in microns. The average human hair is approximately 45 microns, while merino wool fibres are typically only 15 - 24 microns. This fine structure gives merino wool its special softness and comfort.
People have been using sheep's wool for over 3000 years. In the past, wool clothing was thick, coarse and heavy. Over time, breeding and cultivation technologies have significantly improved the quality of wool. Merino wool is one of the best examples of this development - it is light, flexible, soft and highly functional.
Key benefits of merino wool
Excellent thermal insulation
One of the most important properties of merino wool is its ability to provide warmth while remaining lightweight. It offers an excellent warmth-to-weight ratio, allowing it to be used as an effective clothing layer without excessive bulk.
Excellent moisture regulation
Studies on textile fibres show that merino wool can absorb up to 30-35% of its weight while maintaining a dry feel on the skin. By comparison, cotton typically absorbs 8-10% before it becomes noticeably wet.
The fibre actively wicks moisture away from the body and helps it evaporate, thus maintaining comfort even during intense physical exertion. This property makes merino wool an ideal material for base layers, sportswear and travel, provided that the wearer does not experience discomfort from wearing wool garments, which can be the case for particularly sensitive skin.
Breathability and temperature regulation
Merino wool naturally regulates body temperature. In cold weather, it helps retain warmth, while in warm conditions it provides ventilation and helps prevent overheating, making it great for use in both winter and summer.
Natural odour resistance
One of the properties that makes merino wool particularly popular with travellers is its ability to prevent unpleasant odours. Research into odour formation in textiles shows that merino wool clothing can accumulate significantly fewer bacteria that cause unpleasant odours, so merino clothing can often be worn 2-3 times longer between washes than synthetic fabrics.
High level of comfort
Merino wool fibres are very fine and elastic, making this material particularly pleasant to wear, adapting to body movements and providing comfort in both sports and everyday use.
Merino fibres can stretch up to 30% of their length and then return to their original shape. This elasticity helps the garment retain its shape and reduces creasing. Unlike traditional wool, merino wool does not usually irritate the skin, but if you feel it is still a little too harsh, wash your merino wool garment with jeans.
Sustainable and environmentally friendly choice
Merino wool is a natural material that is both renewable and biodegradable. Sheep grow a new layer of wool every year, making this fibre a sustainable resource. Unlike synthetic materials, merino wool degrades in nature within a few years.
Disadvantages of merino wool
Although merino wool has many advantages, it also has some disadvantages, such as a higher price. Merino wool clothing is usually more expensive than similar products made from synthetic materials.
Lower durability - merino wool is a thin and light material, making it less resistant to mechanical damage, but most damage can be easily repaired.
It also has a slightly slower drying time - merino wool can absorb more moisture than synthetic fabrics, so it can also take a little longer to dry.
Merino wool versus conventional wool
The main difference between merino and traditional wool is the thickness of the fibres. As mentioned above, merino wool is 15 - 24 microns, which makes it much softer and more pleasant on the skin, but conventional wool often exceeds 25 microns, so it can feel coarser. The weight of the fabric also differs. Merino wool fabrics are typically 150 - 300 g/m2, which makes them lighter and more flexible.
Merino wool versus synthetic materials
Synthetic fabrics, such as polyester or nylon, are often cheaper and more durable, but they lack some of the natural properties of merino wool.
Merino wool provides better temperature regulation, natural odour control and is more environmentally friendly. Synthetic fabrics, on the other hand, usually dry faster and are more resistant to wear.
To combine the benefits of different materials, many manufacturers use merino wool blends.
For example:
- merino and nylon combination improves durability;
- merino and Tencel blends provide better breathability and comfort during intense activities.
Merino wool fabrics are usually 150 - 300 g/m2
The warmth of merino clothing is often determined by the fabric weight. Typical merino fabrics:
- 150 g/m2 - light T-shirts for summer;
- 200 g/m2 - versatile thermal underwear;
- 250 - 300 g/m2 - warm winter layers.
How to care for merino wool clothing?
Caring for merino wool is simpler than often thought. Merino does not need to be washed often.
After wearing:
- hang on a hanger or chair, preferably horizontally;
- ideally - by a window or balcony;
- 30 - 60 minutes of airing often completely removes odours.
In most cases, simply airing the garment is sufficient. If washing is necessary, it can be done in a washing machine at a low temperature with a wool-specific detergent or a mild detergent that will not damage it.
Recommended:
- wash at up to 30 degrees;
- do not use fabric softener;
- do not use a tumble dryer;
- dry horizontally.
Properly cared for merino clothing can last for several years.
