Acrylic is generally warmer than wool because it is a synthetic material that traps heat more effectively.
Wool is a natural fiber that is warmer than acrylics. Acrylic yarn is made from plastics. It traps the heat of your body and makes you sweat a lot while not really keeping you warm from winter winds. Wool comes from sheep. It is a natural insulator. It keeps you warm while allowing the skin to breathe. It wicks moisture away from your body. Wool keeps your skin warm even when wet.
Wool is generally warmer than cotton, due to the air spaces in wool.
Cotton is generally not warmer than acrylic. While cotton is breathable and suitable for warmer weather, acrylic is a synthetic fiber designed to provide more insulation and retain heat. As a result, acrylic tends to be warmer, making it a popular choice for colder climates and winter clothing. However, individual comfort can vary based on personal preference and the specific use case.
Wool acrylic is a blend of wool fibers and acrylic fibers, combining the natural qualities of wool with the synthetic properties of acrylic. This mixture offers the warmth and breathability of wool while enhancing durability, softness, and ease of care thanks to the acrylic. Wool acrylic yarns and fabrics are often used in garments and home textiles, providing a cost-effective alternative to pure wool. The blend is appreciated for its versatility, making it suitable for a variety of projects.
Better is a judgement and you are the judge. Lambswool comes from fleece grown by lambs. Wool may come from any age animal.
It will depend on the kind of wool used, and the method of felting and or boiling used on the wool to make the fabric. Ski parkas are built for active wear and can be warmer than wool jackets if they have special high tech fibers and construction.
Alpaca socks are generally warmer than wool socks because alpaca fibers are hollow, providing better insulation and trapping more heat.
Acrylic socks are generally softer and more comfortable than wool socks, but wool socks are more durable and have better moisture-wicking properties. Wool socks are better at keeping your feet dry and warm, while acrylic socks may feel more cozy and cushioned.
It means that it is made of more than one fibre, for instance acrylic with wool.
acrylic
It is often due to an itchy rash that may be caused by contact with skin of the wool. Many, including myself, find acrylic material to be far more comfortable and less irritating to the touch. For others, this causes no problem however.
Acrylic is often preferred over wool because it is more affordable, easier to care for (machine washable), and it is hypoallergenic, making it a good option for people with wool allergies. Additionally, acrylic fibers are known for their durability and colorfastness.