The pouches are made of durable material, which can protect the contents inside from damage during transit. The pouches are also water-resistant, which can protect the contents inside from moisture damage during transit. The pouches are also lightweight, which makes them easy to transport and reduces shipping costs. Overall, plain black courier pouches is a practical and cost-effective solution for anyone who needs to ship items frequently. The pouches are durable, water-resistant, and can protect the contents inside from damage during transit. The plain black color of the pouches makes them versatile and suitable for any type of business or personal use.