Royal Talens ART Backpack Weight: Approximately 400g Size: Height 42cm x Width approximately 30cm x Depth approximately 12cm Slight variations may occur. I have investigated as much as possible, but I don't know the material. It's a durable and sturdy material that can carry art supplies. I use one myself and would like to offer an unused, unopened one... Features: Lightweight and easy to carry, ideal for carrying and protecting valuable art supplies and tools. The Royal Talens brand is known for the quality and innovation of its products in the art and drawing fields. The unique EAN code 8712079466862 for this product guarantees the authenticity and originality of the Amsterdam backpack. The Amsterdam backpack belongs to the category of folders, bags, and portfolio tubes, providing a practical and stylish solution for organizing and carrying art supplies. This backpack stands out for its modern design and smart functionality. With multiple pockets and internal compartments, the Amsterdam backpack can perfectly organize drawing tools such as pencils, brushes, markers, and pens. Thank you for viewing.