AATCC & ISO (DW) Multifiber test fabric # 10A (DW) precut pieces of 4 X 10 cm (1.57 X 3.93 inches) WITH Heat Sealed (Fused) Edges. Six fiber (15 mm [0.6 in.] bands) containing acetate, cotton, nylon, polyester, acrylic and wool. Precisely Heat Sealed Edges to use in any mechanical action test such as AATCC TM 61-Colorfastness to Laundering testing done in a Laundrometer. Pack of 250 Pieces