Product name: bicycle frame bag Material: polyester Color: black Capacity: 4.5 L Item weight: ‎350 g 【Large Capacity】(Not suitable for Super 73 RX frame) The bag capacity is 4.5L, with a separate mesh pocket inside, which can hold all your tools and essentials, such as cell phone, earphone, wallet. 【Waterproof】Our bike bag is made of PU, EVA material and double seamless zipper, which provides excellent waterproof performance and protects your gear from drying out even on rainy days. 【Easy Installation】With 3 hook-and-loop fasteners, the ROCKBROS bike frame bag is easy to install. It is specially designed for Super 73 electric bikes. 【Ergonomically Designed】Our electric bike frame bag won't rub against your legs while riding. 【Reflective】There are ROCKBROS brand reflective elements on both sides of the bike bag to ensure your safety when riding at night. 【100% Satisfaction】ROCKBROS promises to offer 100% satisfaction to every customer.