[PREMIUM MATERIAL]:The bike rear seat bag is made of nylon and TPU,all-round reflective strips add better visibility in low light.The seam-sealed waterproof zipper is durable and sturdy,helping to waterproof and protect your belongings from raindrops and humidity. [PRODUCT SIZE]:With the size of 15*10*7.5cm,the bicycle saddle bag is spacious enough to hold all your necessities, such as keys,mobile phone,wallet,small bicycle accessories,tire repair kit or multi-tool,etc. [REFLECTIVE STRIP DESIGN]:The reflective strip with logo on the bicycle saddle bag can improve your visibility in low light or dark conditions and provide a safety signal when riding at night. [EASY TO ASSEMBLE]:Comes with a quick-release mounting clip to securely fix the bag to the seatpost,which can be installed and removed quickly and easily without tools. Product size: 15*10.5*7.5cm Product Quantity: 1 Piece Product color: black