NDakter Bike Saddle Bag Expandable Under Seat Bicycle Seat Bag 1.5-2L

Expandable Capacity: Expandable 1.5L-2L bike seat bag with a double-ended zipper-adjustable design to fit your storage needs. Measures 10.2-12 x 2 x 4.3 in. Easily expands to carry more gear while maintaining a compact profile when not fully expanded Night Visibility: Large reflective area around the seat bag increase visibility in low-light conditions to help keep you visible during night rides. The saddle bag features an additional taillight hook for mounting your taillight(taillight not included in the package) Waterproof Protection:This expandable bicycle saddle bag is crafted from heavy-duty 900D waterproof polyester with a PU-coated surface and a waterproof zipper to help block rain, dirt, and dust. Not recommended for prolonged exposure to heavy rain Multi-Compartment Storage: The spacious main compartment with two mesh pockets keeps your keys, phone, wallet, repair tools and organized for quick access while riding. Perfect for road biking, mountain biking, commuting, cycling training and long-distance rides Built to Last & Stable: Two upgraded wide nylon straps with reinforced stitching matching a adjustable Velcro straps provide a stable, wobble-free fit and resist tearing. The adjustable design fits most bikes, and excess hook-and-loop can be trimmed for a cleaner setup