A jute sack is a bag made of jute, a natural fiber. Jute sacks are commonly used for storage and transportation of food, grains, and other dry goods. Jute is a strong, durable material that is resistant to rot and pests. Jute sacks are often used for storage of coffee beans and other agricultural products. Jute sacks are also used for packaging of consumer goods such as soap, detergent, and spices.