Double rear bag for bicycle with a spacious main compartment for your essentials during rides. Versatile off-bike use - The bag can also be used as a normal bag after the bike is parked. It can be carried in the hand or over the shoulder for flexible, everyday use. Practical hydration option - Practical drink bag on the back that fits easily on the pannier rack and can be easily removed when needed. Organized storage on the go - Side pockets designed for repair items, sunglasses, and other small items for quick access and tidy organization. 2-3 use scenarios - Daily commute and errands: keep your work items in the main compartment, use the drink bag on the back for hydration, and detach the bag to carry by hand when you reach your destination. - Weekend ride or longer trip: store repair items and sunglasses in the side pockets for easy access; leave the bag attached to the rack on longer stretches, or remove it when you need a lighter carry. - Shopping after a ride: detach from the bike and carry as a regular bag for convenient, hands-free transport. Key attributes - Function: double rear bag with a spacious main compartment, side pockets, and a removable drink bag. - Compatibility: designed to fit easily on pannier racks and still removable for on-the-go use. - Size and capacity: spacious main compartment for riding essentials; multiple pockets for organization. - Material and build: durable rear bag suitable for regular cycling use (specific material not provided in the original description). - Performance: secure on the rack, easy to detach, and versatile for both cycling and everyday carry. This description preserves the original product functions and features, while presenting them in clear, customer-focused language with practical use scenarios.