This is a shinai bag. It's adjustable and made very sturdy. It will be folded, waterproofed, and sent via anonymous delivery. Bubble wrap will not be used. It has been used very little. Please ask if you have any questions. Kendo Shinai bag I didn't know the material name, so I showed the image to AI for analysis, and it said it was "reinforced nylon" or "high-density polyester." I apologize if this is incorrect. It is certainly a very durable material.