I recently purchased this on Mercari, but it didn't fit my backpack, so I'm putting it up for sale. The previous seller said it was unused, and I only tried attaching it to my backpack. The keys and instruction manual are not included. As shown in the photos, only the main unit and the case are included. The backpack is not included. I checked the condition, and it's like new. I didn't see any rust, but please understand that it's not brand new before purchasing. How about this for backpackers going abroad, mountaineering, or camping trips? It's loved worldwide, and its performance is guaranteed. You can check how to use it on YouTube or download the instruction manual from the official website. 【Brand】 Pacsafe is a brand known for security products for travelers. They offer reliable products. 【Product Features】 This security net is an item to keep your backpack and luggage safe. Made of nylon, it is lightweight and durable. Adjustable size, it can accommodate various bags. 【Usage Scenarios】 Perfect for travel and outdoor activities, it helps protect valuables. Especially recommended for use in crowded places and tourist destinations. - Brand: Pacsafe - Type: Security Net - Material: Nylon - Color: Gray - Size: Adjustable Thank you for viewing.