L-BOXX Contractor Backpack. The L-BOXX Contractor System is the mobile tool storage solution of choice, combining durability with versatility. Its interlocking modular design allows for seamless integration with all other products in the L-BOXX Contractor System. The L-BOXX Contractor Backpack offers multiple practical storage options. It features two main compartments, one for hand tools and one for documents and devices, as well as a protective compartment for glasses or safety goggles. The durable, robust, and water-repellent exterior material of the backpack protects the contents from dust and moisture. With its impact-resistant, molded base, the backpack can be stacked on all L-BOXX Contractor cases. The L-BOXX Contractor Backpack includes a padded back, a large open main compartment, a separate laptop compartment, zippered pockets, open storage pockets, and a water bottle pocket. All L-BOXX Contractor products are backward compatible with standard L-BOXXes.