The ’S' rating of a fabric relates to the structure and composition of wool in its weave. The smaller the number, the heavier the fabric is. We recommend 100s to 150s as the ideal suiting fabric choice. Dependant on needs (eg for Dish Dashas or ultra-luxury suiting), a higher ’s’ count can be more desirable. The selection here includes suiting fabric that is 140s. Please contact us if you cannot find what you are looking for online as we have more available in store.