Hard shell eva material rockbros bag can protect your items well when getting external shocks. Large side opening for quick view and taking out item easily, allows you operation by one hand. Large capacity frame bag can hold phone, wallet, bike pumps, repair tools and other cycling essentials. Three straps for mounting stably on the bike frame, easy to install. Easy to access hard shell eva material 1.5L-2.5L large capacity durable hard shell design: the rockbros bike frame bag is crafted from high-quality eva carbon pattern material using a cold-pressed process, offering exceptional impact resistance and deformation prevention. Unlike most ordinary bike bags on the market, it provides superior protection for your belongings. It's suitable for various types of bikes, including mountain bikes and road bikes. Spacious capacity: this bike frame bag offers a generous 2.5L of storage space. It's large enough to hold all your essential cycling items, such as your phone, wallet, keys, tire repair tools, co2 pump, water bottle, mini pump, energy gels, gloves, and more, ensuring you have everything you need for your ride. Double zipper & compartmentalized storage: the innovative double zipper design allows for expanded capacity and convenient organization. Inside, multiple compartments and mesh pockets on both sides prevent items from shifting, keeping them secure and protecting valuables like your phone. You can easily organize and access small items like keys, cards, and tools. ...