Color: Black Material: Oxford fabric Capacity: 56-75L Laptop Size: 16 inches Inner Fabric: polyester Waterproofing: Waterproof 1. Adjustable design: the adjustable buckle can adjust the length of the shoulder strap according to the body shape, which is convenient and quick. 2. Durable: the stress-resistant part of the shoulder strap is reinforced with thick threads, which are strong and firm and extend the lifespan of the bag. 3. External USB interface system: there is a USB interface on the side of the backpack, which can be charged, keeping your phone charged at all times, stylish, convenient, and practical. 4. Ventilated back: the backpack uses a three-dimensional breathable system 3D, honeycomb mesh design, comfortable fabric, and strong breathability. [French company and brand TECH DISCOUNT]: Our company TECH DISCOUNT manufactures and sells this superior quality product compared to similar products on the market (Even if the photos are similar, they are not designed the same way and sellers do not offer the same after-sales services). Each product undergoes strict quality control before shipping, ensuring you receive your product in excellent condition. In the event of quality issues, we will offer a free exchange within 14 days. Shipped from France on the same day of the order, and you will receive it as soon as possible (unlike other sellers who cannot guarantee shipping time or who ship from abroad and whose after-sales service is generally insufficient). Our after-sales service will be at your disposal to respond to you effectively. [To other sellers]: This product is sold exclusively under our French brand TECH DISCOUNT. It is forbidden to add this offer to your e-commerce website.