The photo is an image. It differs from the actual product. This is a kit that allows you to add two more bottles by attaching it under the saddle. It's made entirely of aluminum. Two bottle cages will also be included! I'm selling it because I haven't had a chance to use it since I bought it, and I'm organizing my equipment. Perfect for triathlon bikes and TT bikes! Regarding the condition of the product and how it's been used, I ask for no claims and no returns. Self-introduction: Non-smoker, no pets. I have a house dust allergy, so I pay more attention to cleanliness in terms of cleaning and laundry than the average person. Thank you. ① This product is a used item. Please be aware of this. ② I am not a professional seller, but just an amateur. I try to take care of and inspect the items, but there may be oversights, so please understand. ③ To avoid trouble, I cannot accept returns or refunds. Regarding packaging materials, I would like to reuse and recycle them to help protect the environment. Please understand the above three points before purchasing. Thank you.