Wool is generally warmer than cotton, due to the air spaces in wool.
Mohair, a fibre, comes from Angora goats.
Mohair
Acrylic is generally warmer than wool because it is a synthetic material that traps heat more effectively.
Mohair is the fleece of the Angora goat. This is a goat that is bred for the use of the hair, it is not as thick as wool therefore it is called Mohair.
del Rio
Better is a judgement and you are the judge. Lambswool comes from fleece grown by lambs. Wool may come from any age animal.
Mohair or cashmere
mohair or fibre
John P. Hunter has written: 'The economics of wool and mohair production and marketing in Lesotho' -- subject(s): Marketing, Mohair, Mohair industry, Wool, Wool industry 'Red Thunder' 'Rainfall and temperature probability statistics for Lesotho agriculture' -- subject(s): Lesotho, Rainfall probabilities, Temperature normals
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.
Just as wool comes from a sheep's coat, mohair comes from the hair of the Angora goat. Just like wool it is made into yarn, and is one of the oldest textiles used by human beings. There is also a kind of canvas similar to the denim in jeans and used on the roofs of convertible cars. This is also called mohair but is not the same as the goat wool described above.