Black Merino Wool/Polyester Interlock from $4.12 Fabric will be continuous if ordering more than one cut. Sample 1/2 yard cut 1 yard Qty. Qty available: 10 Add to Cart This Interlock is 88% Wool and 12% Polyester. It is 50" wide and weighs 250 GSM. This fabric has a very nice drape and is very softHand wash only. Tweet