AISFA Waterproof Square Fits Business USB Charging 30L Ideal for Outdoor Emergency Shoe and Lunch Storage Men's Backpack, 17-inch PCs, Laptops, Port,

[30L Large Capacity | Expandable] Dimensions: (45+13)cm x 33cm x 18cm, Weight: Approximately 1kg, Capacity: Approximately 30L. This backpack features a popular box design, square shape, and wide gusset for excellent storage, making it ideal for any occasion. Its large capacity backpack features smart compartments and ample storage for essential items like a 17-inch laptop, A4-sized documents, and a few days' worth of clothes. Measurements may vary slightly due to manual measurement. [Functionality | Two-Layer | SBS Zipper] This AISFA-original, compact design features the ultimate hidden wet and dry bottom compartment. It features two separate layers. The lower pocket is waterproof, allowing you to store shoes, lunch boxes, wet umbrellas, and clothes separately in the lower compartment! This is especially effective during the rainy season. If you don't need the expansion function, you can close the zipper to create a hidden pocket. The zipper is made of durable SBS double zipper, ensuring peace of mind even when carrying a large amount of luggage. [Direct Zipper | PC Storage Space] ★Back Zipper: A convenient back zipper allows direct access to the main compartment. It's very convenient for quickly retrieving documents and small items. ★Separate PC Storage Space: Thick cushioning protects your PC, tablet, and other items from shocks and vibrations. ★Key Holder: The main compartment has a key holder so you can easily find your keys. [Box Structure | Carry-On Function] This popular square-shaped backpack features a box structure that combines beauty and functionality. It's a favorite among skiers, campers, and outdoor enthusiasts. The business backpack features a carry-on function, and a dedicated luggage strap on the back allows you to secure the backpack to your suitcase for easy transport and prevents slipping. It also features a card pocket on the shoulder strap, allowing you to pass through ticket gates without being stopped. It's suitable for both men and women, and is convenient to carry, making it suitable for a wide range of uses, including business trips and travel. Water-Repellent | 1600D Nylon: This backpack is made with high-quality 1600D nylon with a PU coating, making it abrasion-resistant, durable, and sturdy. The PU coating enhances its water resistance. The thick, firm Oxford (nylon) fabric is also wrinkle-resistant. This durable, waterproof backpack with a beautiful sheen protects the contents from light rain and dirt. *Water-repellent processing is different from waterproofing, so water may seep in if left in the rain for a long period of time. [USB Charging Port | Earphone Hole] The backpack has a USB charging port on the side, allowing you to connect a portable power source from inside the backpack. You can charge your phone while wearing it, and by connecting it to the charger, you can keep your phone charged while traveling. There's also a dedicated earphone hole on the side, so you can listen to music while wearing the backpack. *Power bank not included. [Breathable | Decompression Back Design] The ergonomically designed straps and back are made with thick cushioning and highly breathable mesh fabric, providing a decompression effect to reduce strain. The wide S-shaped straps and chest belt distribute the load evenly across the shoulders and back, reducing pressure and preventing shoulder slippage. The excellent fit ensures a comfortable, fatigue-free carry, even when worn for long periods of time. A hidden anti-theft pocket is also included for storing valuables and a cell phone. [Useful in a variety of situations] This backpack is perfect for daily commutes, camping, mountain climbing, business trips, travel, fishing, and more, thanks to its carry-on functionality. It's perfect for everyday use, as well as an emergency backpack. It's also a great gift for yourself, Christmas, Father's Day, birthdays, and more! [Notes] The backpack is shipped folded in environmentally friendly packaging. To allow the backpack to return to its original shape, it should be left unpacked for a few days before use. Due to manual measurement, slight variations in size may occur. When opening the package, you may notice a smell from the surface treatment chemicals or adhesives. This is unavoidable due to the nature of the material and processing. If you notice an odor, remove the backpack from the package, open the main opening, and let it air out indoors for a while. [AISFA Reliable Quality Guarantee] If you have any problems using this backpack, please feel free to contact us. We will provide full support until the end, so please rest assured. When contacting us, please provide your order number and the product name of the item you purchased. *Intentional damage is not covered by the warranty. We take every precaution to ensure the quality of our products, but if there is a problem or you are not satisfied, please contact us. If there is a defect in the product, we will promptly replace it, so please buy with confidence.