Maximize your e-bike&';s cargo capacity with the Big Daddy 2 Expandable Waterproof Bike Rack Bag. This versatile and robust bag is designed to fit most standard rear bicycle racks, offering ample storage for all your riding essentials. With its expandable main compartment, drop-down panniers, and innovative features, the Big Daddy 2 is perfect for commuters, tourers, and everyday cyclists who need reliable, weather-resistant storage. Key features: - Waterproof main compartment with RF seam-sealed internal liner - Expandable top and drop-down side panniers for extra storage - Secure 4-strap attachment system - Waterproof zipper on the main storage compartment - Versatile drink holder accommodating multiple bottle sizes - Bungee net on top for quick-access storage - Included shoulder strap for off-bike carrying - Reflective accents for enhanced visibility - Compatible with racks up to 7.5" wide Whether you&';re commuting to work, running errands, or embarking on a weekend adventure, the Big Daddy 2 Expandable Waterproof Bike Rack Bag ensures you have space for all your gear while keeping it dry and secure.