What characteristic is evaluated when assessing sheep wool's quality?

When assessing the quality of sheep wool, crimp is a key characteristic that is evaluated. Crimp refers to the natural wave or curl of the wool fibers. This feature significantly influences the wool's elasticity and resilience, allowing it to return to its original shape after being stretched or compressed. Wool with good crimp has a higher capacity for insulation and can maintain warmth in various conditions, making it more desirable for textile production.

The presence of crimp also affects the wool's handle, or how it feels when touched. Wool with the right amount of crimp is often softer and more pleasant to wear, highly valued in the market for garments. Furthermore, crimp contributes to the wool's capacity to trap air, enhancing its insulating properties.

The other characteristics, while important, do not carry the same weight in determining wool quality as crimp does. For instance, while density, length, and color can also impact the overall value and suitability of wool for specific applications, crimp is a fundamental property closely linked to the performance and quality of the final fabric.