Backpack Rucksack Square Mountain Climbing Backpack 30L Waterproof Inch PC Business Laptop Back with USB Charging Port Outdoor Mountain Climbing

[30L large capacity/expandable] Size: (45+13)cm*33cm*18cm Weight: Approx. 1KG Capacity: Approx. 30L AISFA upper and lower double layer backpack has been upgraded. Adds heat retention function. This large-capacity backpack with smart sorting pockets can hold plenty of necessary items such as a 15.6-inch PC, A4-sized documents, and a change of clothes for two to three days. Due to manual measurement, there may be small errors. [Thermal retention function/Direct connection zipper] Improved level of thermal insulation pocket: The thermal pocket is made of excellent insulation material to block out hot outside air, and the interior is made of special waterproof material. It not only keeps you warm but also keeps you cold. ★Back zipper: Comes with a convenient back zipper that allows direct access to the main room. It is very convenient to quickly take out documents and small items. Find what you need quickly. [Functional / Upper and lower dual layers / SBS zipper] The ultimate hidden wet and dry bottom compartment with AISFA's original compact design. It is a two-layer type with storage space divided into upper and lower sections. The lower pockets are made with a waterproof sheet, so you can separately store shoes, lunches, wet umbrellas, clothes, etc. in the storage space at the bottom! It is especially effective during the rainy season. If you don't need the extension, you can close the zipper to create a hidden pocket. The zipper uses a highly durable SBS double zipper. You can rest assured that it won't get damaged even when you put a lot of luggage in it. [BOX three-dimensional structure/carry-on function] The backpack is a square-shaped backpack with a box structure that is popular at the moment, combining beauty and functionality. It is also used by skiers, campers, and outdoor enthusiasts. The business backpack is equipped with a carry-on function, and the baggage belt on the back allows you to secure the business backpack to your suitcase, making it easy to move and eliminating the worry of it falling off. There is also a card pocket on the shoulder, so you can pass through the ticket gate without stopping. It can be used by both men and women, is convenient to carry around, and can be used for a wide range of purposes such as business trips and travel. [Water Repellent / 1600D Nylon] The backpack is made of PU coating and high quality 1600D nylon material, which has the characteristics of wear resistance, durability, and toughness. PU coating increases waterproofness. Oxford (nylon) is thick and firm, and also has the advantage of being wrinkle-resistant. This waterproof backpack is durable yet has a beautiful luster that protects the contents from light rain and dirt. *Water repellent finish is different from waterproof finish, so water may seep into the product if it rains for a long time. [Breathable/decompression back structure] The ergonomically designed belt and the entire back are made of thick cushioning material and highly breathable mesh fabric, reducing strain through the decompression effect. The wide S-shaped straps and chest belt distribute the load evenly over the shoulders and back, reducing pressure when carrying the bag and preventing shoulders from shifting. It has a great fit and keeps you comfortable even when carrying it for long periods of time without getting tired. In addition, a hidden anti-theft pocket has been added to store valuables and mobile phones. [Useful in a variety of situations] It is equipped with a carry-on function that is essential for various situations such as daily commuting to work or school, camping, mountain climbing, business trips, travel, fishing, etc. It can be used not only for everyday use, but also as a disaster prevention backpack for emergencies. Not only for yourself, but also as a gift for Christmas, Father's Day, birthdays, etc. [USB Charging Port/Earphone Hole] There is a USB charging port on the side of the backpack, allowing you to connect your mobile power source inside the backpack. You can charge it while carrying it on your back, and if you connect it to a charging station, you can move while charging your smartphone. There is also a hole for earphones on the side, so you can listen to music while carrying the backpack while traveling. *Power bank not included. [Thank you for your understanding. ] Due to manual measurement, there may be small errors. When opening the package, there may be an odor from surface treatment chemicals or adhesives. Due to the characteristics of the materials and processing, it cannot be avoided, so if you are concerned about the smell, please remove the backpack from the package, open the main body opening, and let it air dry for a while. [AISFA Reliable Quality Assurance] If you have any problems when using the backpack, please feel free to contact us. Please rest assured that we will take responsibility and support you until the end. When contacting us, we would appreciate it if you could provide us with the "order number" and "product name" of the purchased product. *Intentional damage is not covered by the warranty. Contact method: [Account Service] - [Order History] - [Contact Seller] [30L large capacity/expandable] Size: (45+13)cm*33cm*18cm Weight: Approximately 1KG Capacity: Approximately 30L AISFA upper and lower double layer backpack has been upgraded. Adds heat retention function. This is a large-capacity backpack with smart sorting pockets that can hold plenty of necessary items such as a 15.6-inch PC, A4-sized documents, and a change of clothes for two to three days. Due to manual measurement, there may be small errors.