[lovvento] Men's Vacuum Compressed Backpack, Fits 17-inch Laptop, 50L Capacity, Expandable, Dual-Layer Design, with Lock, Carry-On Function,

[Backpack with Vacuum Compression Bag] The LOVVENTO backpack is equipped with a vacuum compression bag, allowing you to easily deflate bulky items like clothing. Simply open the exhaust valve and push with your hand, eliminating the need for a pump. It's convenient and space-saving, allowing you to store your clothes in a compact backpack, perfect for business trips and travel. (Note: The zipper on the compression bag is slightly stiff to ensure a tight seal. It may feel stiff, especially the first time you use it. However, you'll need to apply force to open and close the zipper. If you don't apply enough force, the vacuum storage pocket won't open or close. Also, lightly applying silicone spray to the zipper will make it operate more smoothly.) [High-Quality & Multifunctional Vacuum Compressed Air Backpack] 1. Material: PVC tarpaulin + water-repellent Oxford cloth. Made from high-density Oxford cloth, this highly water-repellent bag protects the contents from rain and dirt, making it perfect for sudden downpours in the city! 2. Easy-to-use TSA lock: The TSA-approved security lock is convenient for airport security and prevents damage to your luggage. Enhanced travel security. 3. Carry-on function: Can be attached to a suitcase. 4. The backpack features an expandable design, with a gusset that can be expanded by approximately 7cm, reaching a capacity of 50L, equivalent to the capacity of a 24-inch (medium) suitcase. Ideal for business trips or trips of 3 to 5 nights. 5. Carry-on size, suitable for airplanes, allowing it to be placed in the overhead bin or under a seat. [16 Pockets for a Large Capacity Backpack] Size (Before Expansion): 34cm W x 47cm H x 10cm D (16L) ⇒ Size (After Expansion): 34cm W x 47cm H x 17cm D (27L) ⇒ Size (After Vacuum Compression): 34cm W x 47cm H x 31cm D (50L) / [Exterior Pockets] 1 front pocket, 1 wet/dry compartment, 1 expandable side pocket, 1 rear anti-theft pocket [Interior Pockets] 1st Layer: 1 zipper pocket, 2 mesh pockets, 1 vacuum-compressed pocket / 2nd Layer: 1 main pocket, 1 17-inch PC pocket, 1 9.2-inch iPad pocket, 2 pen pockets, 2 small item pockets, 1 open pocket. The 16 pockets, including the main pocket, front pocket, back pocket, A4 file pocket, and wet/dry compartment, allow for neat and tidy storage. Additionally, the password-locked rear pocket can easily fit a 17-inch PC, meeting a variety of storage needs. [Ergonomic design for a comfortable, hug-your-back feel] The dual-layer construction, featuring a mesh, cushioned back panel and a central ventilation channel for breathability, reduces back stuffiness and ensures a comfortable carrying experience. The ergonomically designed S-shaped shoulder straps and the entire back feature thick cushioning and highly breathable mesh material for a decompression effect, reducing strain on the back. Even on hot days, they effectively ventilate and keep you feeling refreshed. The bag also comes standard with an adjustable buckle-type chest belt, which supports the weight of the bag across your chest for a lighter feel. The belt length can be adjusted to accommodate a variety of body types. [Versatile] Perfect for everyday use, such as commuting to school or work, as well as travel, business trips, sports, hiking, mountain climbing, picnics, and other outdoor activities. It also makes a heartwarming gift for fathers, boyfriends, friends, and colleagues on New Year's, Christmas, anniversaries, job hunting, school entrance ceremonies, and graduations. Its simple design and muted colors make it suitable for people of all ages and genders.