Versatile bike rear seat bag with double tail bag and detachable carry option This bag combines a bike rear seat bag, a double tail bag, and a detachable carry bag into one practical accessory. After parking the bike, it can be carried by hand or over the shoulder as a regular bag. It includes convenient side pockets, a roomy main compartment, and a secure onrack attachment system. Key features and benefits 2in1 versatility Functions as a rear seat bag, a double tail bag, and a detachable carry bag. Converts to a regular bag for offbike use, enabling seamless transition from riding to everyday carry. Organized storage Main compartment offers generous space for daily essentials, tools, spare parts, or items. Side pockets provide quick access for items, sunglasses, and small accessories. Secure and easy to use Pannierstyle straps hold the bag firmly to the rear rack during rides. Handy carrying handle enables simple offbike transport. Practical and adaptable Designed for everyday commuting, errands, and short trips around town. Suitable for weekend rides or light touring where extra capacity is helpful. Durable and functional design Built to withstand regular cycling use with practical construction and reliable performance. Maintains access to contents while on the bike and remains easy to carry when detached. Performance and compatibility notes Function: integral rear seat bag with a double tail bag configuration plus a detachable carry option. Storage: main compartment plus multiple side pockets for organized packing. Attachment: straps secure to the rear rack for stable onbike use; includes a carrying handle for offbike transport. Size and capacity: designed for everyday items and accessories, with a roomy interior to accommodate tools, clothing, and items as needed. Material: constructed for durable, longterm use (specific materials not listed). Use scenarios Daily commute and errands Attach to the rear rack for riding days; when you reach your destination, detach and carry the bag to your office, home, or store using the handle or over the shoulder strap. Weekend ride or light touring Pack extra clothing, a small camera, essentials, and snacks in the main compartment and side pockets. Use the bag on the bike for easy access, then remove and carry when you arrive. Shopping or gym runs Use the bag as a compact, expandable everyday carrier on and off the bike. The side pockets keep small items organized, while the main compartment holds your larger purchases or gear.