For the man who expands empires while the sky unloads, the TUMI Alpha 3 Waterproof Expandable Business Backpack (2603177) is the sealed, black ballistic juggernaut that grows on command: watertight FXT® armor that drinks storms and spits extra volume, fortified tech vaults and surgical pockets that stay pristine in chaos, and a silhouette that looks lethal whether compact or fully deployed.

Fifty years of obsessive supremacy built to conquer weather and workload alike; it’s not just worn by the immovable; it’s trusted when the day demands more and the rain demands surrender.

Ready for the flood, the surge, and everywhere you arrive larger than the forecast next.

Exterior

• Zip entry to main compartment
• Front U-zip pocket
• Gusseted front straight-zip pocket
• 2 side-zip pockets (one with water-resistant lining)
• Padded adjustable straps
• Leather-wrapped top carry handle
• Add-a-Bag sleeve

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Interior

• Padded laptop compartment (fits up to a 15” PC or 16” MacBook screen)
• Padded tablet pocket
• Zip pocket
• Open pocket
• 3 media pockets
• 3 card pockets
• Pen loops
• Key leash