Blending is a process of combining two or more types of fibres together to achieve desired product characteristics.  There is an increasing demand of blending because of the advantages associated with the new synthetic and natural fibres.  Thus, the blending enhances the desirable properties and minimizes the undesirable properties of the blended fabrics.  The four blended trouser materials viz., polyviscose with 55:45 and 75:25 blend proportions and terrywool with 55:45 and 75:25 blend proportions were selected and subjected for 5,10 and 15 washings to assess for durable properties before and after washings. The results reveal that, among the control and their corresponding washed samples, highest abrasion resistance was found in terrywool (75:25) blend sample and tensile strength in polyviscose samples.  In general, it was noticed that a trend of decrease in abrasion resistance (cycle) and tensile strength, increase in elongation (%) was noticed with the increase in the number of washings.  All the four control and their corresponding washed samples showed no pills on the surface.  However, the effect of washings on abrasion resistance, tensile strength & elongation and pilling showed no significant differences between the control and washed samples.