The KNACK Series 1 Medium Expandable Laptop Backpack is designed for professionals who need one bag that can handle work, travel, and everyday life without compromise. Combining sleek professional styling with expandable travel functionality, this versatile backpack transitions seamlessly from daily commuting to multi-day business trips. Built with water-resistant materials, dedicated laptop storage, and highly organized compartments throughout, the Series 1 Medium Backpack delivers the signature functionality that made KNACK a favorite among frequent travelers and modern professionals. When expanded, the hidden travel compartment provides enough room for 2–3 days of clothing while maintaining a clean, polished silhouette. Ideal for executive gifting, employee onboarding kits, conferences, business travel, and premium branded company merchandise. Features: Expandable design increases capacity from 27L to 39L Water-resistant exterior construction Dedicated padded laptop compartment fits most 15.6" laptops Hidden expandable travel compartment Fits 2–3 days of clothing when expanded Multiple interior organization pockets and compartments Clamshell-style opening for easy packing access Hidden trolley sleeve for luggage attachment Comfortable padded shoulder straps and back panel Professional everyday silhouette with travel-ready functionality Fits under airplane seats and overhead bins on most major airlines Perfect for executive gifting, leadership retreats, employee welcome kits, and premium branded merchandise programs. Custom logo decoration included. ✓ Custom logo embroidery included (one location, up to 7,000 stitches) ✓ Additional logo locations available upon request ✓ Proof within 24 hours ✓ Ships in 3 weeks or less once proof is approved