I'm selling this because it doesn't suit me, even though I recently bought it. The previous seller had it mounted on a motorcycle for about two years. It's an aluminum top case. The dimensions are 420mm wide x 340mm deep (excluding the backrest) x 220mm high. The capacity was supposedly 28 liters. It comes with one dimple key, a mounting base, reflective stickers (unused), short bolts for mounting, and a wrench. One of the bolts currently attached is slightly bent. It didn't cause any problems during use. It's a low-profile case. Full-face helmets and other tall items won't fit. It's used, so please no returns or refunds. Please refrain from purchasing if you are overly concerned about condition.