Our luggage is made of polypropylene, a type of high-quality, tear-resistant, strong plastic that makes our bags durable, reliable and lightweight, making them easy to carry and transport. They are also water-resistant and have a good level of water resistance, which protects the contents of the bag in wet conditions and makes them easy to clean, making them a practical choice for travelers. Our bags are always a great choice for day trips and outings, due to their good balance between performance and price. - gray- 20+24+28 INCH