Tough fabric is a type of material that is strong and durable. Two examples of tough fabrics are DENIM and KHAKI. DENIM is a sturdy cotton twill fabric, usually blue, that is used to make jeans and other clothing. KHAKI is a lightweight cotton fabric with a tan or olive color, often used for military uniforms. Both fabrics are known for their durability and strength, making them ideal for use in clothing and other items that require toughness.