Safe and reliable bike pannier bag - Material and protection: Made from 600D waterproof Oxford fabric with a removable rain cover for double moisture protection. Reflective strips enhance visibility at night, supporting safer rides in low light and rain. Keeps belongings dry and secure when weather turns. Large capacity with organized storage - Expandable volume: 10L to 25L capacity to adapt to your load. - Organization: Multiple compartments and mesh pockets help separate and access items quickly. - Extra storage: Two side pockets measuring 35 x 28 cm provide additional space for essentials, ideal for longer rides. Versatile 3-in-1 use for bicycle luggage carrier - Carry options: Removable and adjustable shoulder strap (70-130 cm) enables flexible use. - Modes: Can be used as a pannier bag, a tote bag, or a shoulder bag, depending on your needs. Practical rear pannier rack design - Convenience features: Elastic bottle holder on the rear for easy access to hydration. - Secure closure: Stretchy closure leash and low-friction double zippers at the top for smooth opening and reliable security. Use scenarios - Daily commuting in rain or shine: Keep work items, groceries, and electronics dry with the rain cover and waterproof fabric, while reflective strips enhance night visibility. - Weekend cycling trips: Expand capacity to carry extra clothing, tools, and snacks; use two side pockets for maps and small gear. - Off-bike versatility: Remove or detach the strap to switch between pannier, tote, or shoulder bag for errands, travel, or airport transfers.