Heat Proof Drill Cloth is a strong, durable cotton fabric with a strong bias [diagonal] in the weave. The Drill Cloth can be used unbleached, although it is more often bleached, or dyed. The Drill Cloth is widely used for making cooks` uniforms [chefs` wear] because it is thick enough to protect the wearer from heat. The Heat Proof Drill Cloth is very cooling and comfortable to the touch.