Transform your bike rides with this innovative large-capacity bike seat storage box. Perfect for e-bikes and cruiser bikes, this sleek black storage solution seamlessly integrates with your bicycle's existing seat post. The built-in lock system keeps your valuables secure while you're on the go, providing peace of mind during your adventures. The universal mounting kit includes all necessary tools and adapters, making installation a breeze on most standard bike models. The durable construction features a weather-resistant design, while the ergonomic shape maintains riding comfort. Store your phone, wallet, keys, and other essentials in this convenient compartment that's always within reach. The smart design includes a red safety light for enhanced visibility during evening rides. Whether you're commuting to work or enjoying a leisure cruise, this practical storage solution adds functionality without compromising your bike's aesthetics.