Dimensions: 12"W x 6"D x 16"H; Product weight: 3.6 lbs.; Volume: 25 L; Expanded volume: 32 L; High-density ballistic ECOFAB™ material with water-resistant DuraGuard® coating resists stains and scrapes; Full-grain leather touch points and airline-grade aluminum hardware bring style and resilience; Zippered expansion gives you up to 28% more space when needed; Hands-free convenience: Rear stacking strap secures the backpack to your rolling luggage; Organized storage: Multiple compartments and a handy key leash keep essentials in check; Add accessories: Heavy-duty front webbing and interior webbing offers multiple spots to attach gear; Grab and go: Side pockets are perfect for water bottles and umbrellas; Handy cellphone storage: Travelpro® QuickSlip™ pocket with magnetic closure is secure but easy to access; Security features: Travelpro® ID TheftBlock™ pocket, dedicated pocket for a tracking device, and discreet anti-theft pockets; Tech protection: Separate padded sleeves cushion your tablet and laptops up to 16; Limited lifetime warranty; Airline Carry-On Guide: Check size and weight limits by carrier; Imported