australia and new zealand are the world leading commercial producers of wool. most australian wool comes from the merino breed. regardless of the advances mankind makes in the creation of new synthetics, technology will never recreate the comfort, strength, softness and security only wool can offer. wool provides us with a personal environment that is health-enhancing because it is a natural fibre. wool disperses moisture from our skin, provides even warmth ugg boots uk and body temperature, resists flame, odor and static electricity.the quality of wool is determined by the following factors, fiber diameter, yield, staple length, color and staple strength. fiber diameter is the single most important wool characteristic determining quality and price.merino wool is thus considered the most valuable of wools. australia produces about 43 percent of ugg uk the world??s merino wool.merino wool is typically 3-5 inches in length and is very fine (between 12-24 microns). wool taken from sheep produced for meat is typically coarser, and has fibers that are .5 to 6 inches in length.ugg boot central uses a merino ugg cross which gives our customers the comfort and durability.because of the crimp, wool fabrics have a greater bulk than other textiles and retain air, which causes the product to retain heat. insulation also works both ways; bedouins and tuaregs use wool clothes to keep the heat out.the uggs amount of crimp corresponds to the thickness of the wool fibers. a fine wool like merino may have up to a hundred crimps per inch, while the coarser wools like karakul may have as few as one to two crimps per inch.