New, unused item *The bag has been opened for photography purposes. 【Premium Fabric】Made with high-quality polyester Oxford fabric, this backpack boasts excellent waterproof properties, protecting your belongings from sudden rain and dirt. It also offers high abrasion resistance and tear resistance. Furthermore, the high-quality zippers and sturdy stitching showcase the high-quality craftsmanship of this business backpack. All stress points are reinforced, ensuring high load-bearing capacity and durability, allowing for long-term use. 【Ultra-Thin & Expandable】This ultra-thin business backpack for men can expand up to 20 liters. Before expansion: 30x5x45CM, after expansion: 30x15x45CM. You can easily switch between ultra-thin and large capacity. It's a convenient business backpack for commuting and everyday outings. It features a shock-resistant compartment to store a laptop, with a Velcro closure to securely hold the laptop in place and prevent damage. 【Multi-functional & Large Capacity Storage】It has multiple pockets of various sizes, making it convenient for organizing and storing your belongings. You can neatly organize daily essentials such as a 15.6-inch laptop, tablet, A4-size documents, pens, wallet, folding umbrella, and water bottle. In addition, it also has a glasses pocket, making it easy to take your glasses in and out. 【Comfortable to Wear】Weighing only 0.75kg, this ultra-lightweight slim business backpack is compact and easy to carry, perfect for commuting on the subway. With an ergonomic design, the shoulder straps and back panel are made of thick, soft, and breathable mesh material, effectively reducing pressure on your back and shoulders. It's cool even on hot days, and comfortable to wear for long periods. Furthermore, it can also be attached to a suitcase. 【Versatile】This PC backpack boasts a simple design and excellent functionality. It's perfect for any occasion, including business, commuting, school, job hunting, interviews, travel, business trips, outdoor activities, and everyday use.