Withstand Rough Conditions: Protect your valuables with an IP54 water-resistant compartment and waterproof base, ensuring durability in harsh environments. Durable Construction: Constructed with tough 1680 denier fabric and dirt-repellant tarpaulin, this backpack is resistant to tears, punctures, and abrasions, making it ideal for tough jobsites. Optimized Organization: Keep your tools organized with 79 pockets, including a separate compartment for your drill and batteries, pull-out tool holder allows for easy access to your most frequently used tools, without the need to rummage through the backpack. Keep Safety: Default Code: 0-0-0. Combination Lock provides added security, ensuring that your tools are safe and secure while in transit or in storage. Comfort and Convenience: Equipped with padded back and shoulder straps, a buckled chest strap, and lower adjustable straps for a perfect fit, providing comfort when carrying heavy loads. The backpack also includes a heavy-duty metal hook for easy access and a removable tool caddy with carrying handles and a D-ring for hanging. RIFESI Tool Backpack Bag, Durable Electrician Backpack Tool Bag for HVAC with Waterproof Molded Base, Construction Work Heavy Duty Tools Organizer Bags with Combination Lock Large - Blue