Made of lightweight and highly rigid aluminum alloy, it is lightweight, has excellent brightness, is durable, and corrosion-resistant. It uses durable anodized (alumite) paint, which is lighter than regular paint. The loading platform is plate-shaped, so it also functions as a simple mudguard in rainy weather or when riding on muddy ground, protecting the rider from splashing water and mud. Simply attach it to the seat post under the saddle, and you can easily install the seat post bracket. The position of the loading platform is adjustable, so it's a bicycle rear carrier that can be installed in the appropriate position to match your bicycle. With a load capacity of 50kg, the weight is distributed by supporting it at three points, allowing you to carry large loads. The arc-shaped wing design securely holds the luggage, preventing it from falling off during long-distance travel or rough road riding. Comes with a rubber cord for securing luggage, making it possible to securely fix your luggage.