Wool is a complex fiber that has been developed through years of evolution. This fiber is so complex it can transport moist inside the fiber from humid to dry conditions and is in fact the only “true” breathable material. In activity when the body is warm and lets out perspiration, the wool fibers let in the vapor and transports it away from the body to drier conditions. Wool can also hold about 1/3 of its weight in water vapor before feeling wet, and when wet it accumulates heat due to waters reaction to the monomer. Wool is biodegradable, wrinkle resistant, flame retardant and has the ability to neutralize unpleasant odor unlike any other material. The wool fiber is so complex that science and technology has not been able to replicate its many abilities in any other fiber. The strength of the wool fiber is only adequate, but the fibers are elastic making 100% wool garments durable in many cases. When the yarn and fabric is constructed a bit loose and thick, it may be favorable to add polyamide to increase the strength and stability of the garment.