Attus is a traditional Ainu textile. The inner bark of the ohyō elm is stripped away, softened by soaking in water, and then peeled into even thinner strips. These thin strips are dyed using vegetable dyes, separated with the fingers, and twisted into thread. The fabric is woven using a primitive, frameless loom–called a backstrap loom–in which the ends of the warp are fixed to a pillar or the like with the tension of the threads adjusted using the hips and the body. The result is light, durable, and gentle to the touch.