Business Backpack Expandable to 2x its original CK Leather Business Large PC [IPUTIN] Men's - size! Bag, Capacity, 17.3-inch Backpack.

🔝【Expandable | Large Capacity Storage (20L ⇔ 30L)】Size: 43×30×16cm (Before expansion: approx. 20L) / 43×30×26cm (After expansion: approx. 33L) Number of pockets: 17. The backpack's front external pocket allows for easy storage of small items you want to access at any time. There is a separate laptop pocket that can fully accommodate a 17.3-inch laptop. The laptop pocket's inner cushioning uses shock-absorbing material and a Velcro closure system to protect your important laptop and tablet. Before expansion, the backpack is only 16cm thick, making it easy to handle and perfect for daily commuting. After expansion, the total storage space of approximately 33L and the compartmentalized design can accommodate everything you need for a 2-3 day business trip. This large-capacity backpack can be used for various occasions such as commuting, business trips, school, and travel. 🔒【High Safety | Multifunctional Backpack】The backpack's shoulder straps are fitted with reflective material that strongly reflects car headlights, providing visibility up to 100m at night, ensuring safety when cycling or motorcycling at night. It also features essential functionalities for a backpack: ① A holder for keys in the front pocket (saving you the trouble of searching for your keys) ② A zippered pocket on the shoulder strap for storing transportation cards (allowing you to pass through ticket gates without stopping) ③ A convenient waterproof pocket for storing toiletries or items that you don't want to leak. 👍【Comfortable and Fatigue-Reducing Ergonomic Design】The backpack's shoulder straps utilize physical suspension and pressure-reducing technology, stabilizing the center of gravity and reducing strain on the shoulders and waist. It also minimizes vibration. The back and shoulder straps are made of breathable mesh material, reducing stuffiness and ensuring comfortable wear even during prolonged use. Equipped with a chest strap, it prevents the backpack from swaying and the straps from shifting, reducing strain during travel. With its 4-way design (backpack, horizontal tote, vertical tote, and luggage strap), you can confidently remove the backpack in front of clients or business partners. Even more importantly, it comes with a dedicated carry-on strap that can be attached to a suitcase for business trips. 🌟【180-degree full-open design | Stress-free usability】This business bag features a main pocket with a 180-degree full-open design, making it incredibly easy to put in and take out your belongings. USB charging port: Charge your smartphone while on the go (sold separately). 3D mesh back panel: Excellent breathability, keeping your back cool even during rush hour commutes. Double-reinforced shoulder straps: Supports up to 15kg, reducing shoulder strain by 50%. 💧【Professional-Grade Durability | Water-Repellent Material】Water-repellent material for business backpacks: Protects contents from rain during commutes and when checking luggage on airplanes. Smooth SBS Zippers: All parts use SBS zippers for smooth opening and closing and long-lasting quality. High-Density Nylon Material: Specially processed to withstand friction with concrete surfaces, making it suitable for daily commutes and achieving 1.8 times the abrasion resistance of the industry standard. The ergonomically designed belts and entire back panel feature thick cushioning and highly breathable mesh material to reduce strain through a pressure-reducing effect. 🌐【12-Month Warranty | Perfect for Various Occasions】This business backpack comes with a 12-month quality guarantee from the date of purchase. If you experience any defects or damage, please contact us. Please contact us via Purchase History → Purchased Items → Seller → Ask a Question. This backpack boasts a simple design and functionality suitable for both men and women of all ages. It's perfect for a wide range of occasions, including commuting, school, business trips, travel, cycling, motorcycling, gifts, disaster preparedness, and everyday life! 📦【12-Month Warranty】This product comes with a 12-month quality guarantee from the date of purchase. If the product is defective or damaged, please contact us. Please contact us via Purchase History → Purchased Items → Seller → Ask a Question.