Stay dry and keep moving with the Manhattan Portage Harbor Collection. The Harbor Backpack was specially designed for urban bike riders. Made using a TPU membrane and nylon fabric, welded seams, and locking waterproof zippers, this bag is 100% waterproof in both fabric and construction. The padded shoulder straps, back support technology and waist stabilizer straps come in handy whether you are riding for 5 minutes or 50 miles! Color/Fabric Type: Black / 1000D Poly 18%, Nylon 82% with TPU Coating Backpack straps Dimensions: 25''x13''x6.5''(W x H x D) Four hook side straps perfect for hauling or attaching loads Tab for taillight Spacious main compartment with waterproof coating Removable interior padded organizer can accommodate up to a 15" MacBook pro (or other electronic devices) Small interior pocket pouch for easy organization of small items Neon green interior accents for extra visibility 2 years against manufacturing defects (for Limited editions, Specialty fabrics and Collaborations