10 Best 40l Backpack of August 2025

• Material:Polyester. YKK Zipper and YKK Buckle
• The main compartment is the size of the whole backpack. Mine is 20"h x 12"w x 4.5" deep.Your Laptop(big enough for a 17"laptop).There is a compartment that can be used for a bladder and a holding place for the tube but no specific bladder space.
• The size is perfect and meets the personal carry on for airlines such as frontier so you can load these down and not pay for a checked bag.
• Includes an adjustable hip belt on this bag that fits waist sizes 25–55 inches,but the belly strap is not removable.An adjustable sternum strap, breathable molded foam back panel, and S-shaped shoulder straps ensure you can properly carry the weight of your gear.
• This backpack is impressively practical for shorter treks,there's a wide color selection to fit any hiker's style.If your torso is longer than 52 centimeters, then Mountaintop recommends you seek a different pack.

MOUNTAINTOP

• 【Upgraded Wet Pocket Design】Venture Pal backpack stands out with more humane design for easy and convenient use. One waterproof wet pocket is added to the main compartment, a zipper on the back of this backpack which led to the internal wet pocket, to better separate sweaty clothes, towels or other personal things after swimming or taking exercise.
• 【Durable Material】This backpack is made of high quality tear and water resistant nylon fabric,heavy duty metal zippers and enhanced by bar-tacks at major stress points provide long-lasting durability against daily activities.The extra strength provided by the double-layer bottom piece makes it possible to carry more stuff.
• 【Compact & Comfortable】It weighs only 0.7 pounds, can easily fold into its own pocket for storage,and unfold it when you need it. Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. The chest clip with a whistle buckle work perfectly to distribute the pack’s weight and keep it steady and centered. A must have for sports , hiking, camping and traveling.
• 【Large Capacity & Multi Compartment】With 40L storage space, this backpack features with multi-compartment design includes one main zipped compartment, one zipped front pockets and two side pockets. One separator and one small zippered pocket in the main compartment are convenient enough to help you further organize things.Large capacity helps you easily organize all your essential items.
• 【Purchase Tips】- If there is any problem, just contact with us, we will handle with it immediately.

Venture Pal

• AMPLE SPACE AND REASONABLE DESIGN: Dimensional design meets the maximum size allowed by IATA flights, easy to carry around; Capacity: 40 L;Backpack size：50*35*25 CM/19.6*13.8*9.8 INCH; Main compartment size:50*32*14CM/19.7*12.6*5.5INCH; Suitable for 10.1-inch tablets and 15.6-inch laptops.
• CONVENIENT TRAVEL: The hidden shoulder strap makes the backpack can be carried or lifted, making it easy to carry around; Luggage trolley straps provides easy travel; The main handle and side handles are designed to lift the backpack from multiple angles.
• EASY TO ORGANIZE: The computer compartment with protective foam pad can store up to 15.6 inch laptop. With the small item storage bag on the lower front side (there is a key buckle in the storage bag), and a quick access storage bag on the upper front side, you can store and organize all personal belongings conveniently and quickly.
• DURABLE:The fabric is made of high density scratch resistant and water repellent polyester, and strengthens the key points of force, which provide more durable backpack.
• COMFORTABLE: Thickened sponge handles and shoulder straps provide you with more comfort when you are carrying and gripping the bag; The chest strap relieves shoulder pressure for weight bearing.

Dinictis

• Meets carry-on size restrictions for most airlines (22H X 14W X 11D inches)
• Large U-zip luggage-style access to main compartment - 46L total volume
• Shoulder straps and hipbelt are stowable converting the bag from a backpack carry to duffel-style
• Protected rear panel lockable zip laptop/tablet sleeve for quick access at security or while traveling (fits up to most 15 inch laptops)
• Front panel organization pocket for easy access to small travel items
• D-ring attachments for adding a shoulder strap (sold separately)

Osprey

• Fabric: Water-resistant Polyester. YKK Zipper and YKK Buckle
• Includes an adjustable hip belt on this bag that fits waist sizes 29–53 inches,but the belly strap is not removable.An adjustable sternum strap, breathable molded foam back panel, and S-shaped shoulder straps ensure you can properly carry the weight of your gear.
• Two-day packs:For a pack you’ll take camping over a weekend, a capacity of 40 to 65 liters is common. These mid-size packs work for carrying a small tent, along with other gear you’ll need for a couple of nights. You can fit some cool weather gear in a pack of this size, but for a lot of winter gear, you’ll probably need a larger pack.
• Separate bladder sleeve in the main compartment.Big enough for a 3 liters hydration bladder or a 17"laptop.
• There is a waterproof cover in its own zippered compartment at the bottom of the pack. It covers the entire backpack

MOUNTAINTOP

• Military Tactical backpack size approx.:13"*20"*11" / 33*50.5*28CM (W*H*D),Capacity: 40L; Military backpack is made of high density fabric--durable and water-resistant
• Molle tactical backpack has molle system, Molle webbing throughout for attaching additional tactical pouches or gear as 3 day assault pack backpack combat molle backpack.
• Assault pack backpack with double-stitched, Heavy duty zippers and utility-style cord pulls, Side and front load compression system, Ventilated mesh padded back area & shoulder strap,breathable and comfortable.
• Military backpack has hydration compatible that works great for a hydration bladder (backpack didn't include hydration bladder) as hydration backpack or outdoor camping hiking backpack.
• Tactical assault pack backpack can be used as 3 day assault pack, range bag, hunting backpack, survival backpack, army backpack, trekking backpack or day pack for daily use

REEBOW GEAR

• ❤ Water Resistant & DURABLE: Waterproof Material included. FENGDONG camping backpack is made of extra thick, tear-resistant, water-resistant and anti-abrasion polyester fiber. All stress points are reinforced with bar tacking to increase its longevity.
• ❤ Breathable Mesh Padding: Stylish DayPack with the ventilated mesh padding shoulder straps and backside, breathable system and lightweight design are the perfect hiking backpack for outdoor sports. Ergonomically designed provides body comfort even when pack is completely full. Keep it cool even in summer.
• ❤ Large Capacity & Multi Compartment Bookbag: College Backpack with 40L storage space(20.5inch x 13inch x 7.1inch), this backpack features with multi-compartment design includes one main zipped compartment, one zipped front pockets and two side pockets. One separator and one small zippered pocket in the main compartment are convenient enough to help you further organize things.Large capacity helps you easily organize all your essential items.
• ❤ Compact & Comfortable: It weighs only 1.9 pounds, can easily fold into its own pocket for storage,and unfold it when you need it. Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. A must have for sports , hiking, camping and traveling.
• ❤ 100% RISK-FREE PURCHASE: If you are not satisfied with our Rucksack, please contact us immediately, we will give you a satisfied solution ASAP.

FENGDONG

• DURABLE MATERIAL & WATER REPELLENT:The laptop backpack made of water resistant and durable polyester fabric.Ensure a secure & long-lasting usage everyday.
• LARGE CAPACITY:①Large capacity travel backpack with many pockets great for business travel, weekend camping.The 1st Layer for storing your small items( For tissue/key/earphone).The 2nd Layer for books,phones, wallets and other daily necessities.The 3rd Layer for storing clothes, umbrellas or other things. The 4th Layer for Laptop,Macbook max to 15.6 Inch as well as 9.7 inch notebook.②SIZE:18.9x12.2x6.7inch (23L).This backpack’s size can be expanded to 18.9x12.2x10inch (40L).
• SHOULDER PRESSURE REDUCE DESIDN:①Ergonomic s-shaped padded shoulder strap and fully 3D ventilation padded back,which make your shoulder stress released and protect your back and shoulder effectively even when full loaded..②The straps can be adjusted to various heights of people and help relieve shoulder stress via transfer.③A top handle and a side handle provide ergonomic comfort and travel convenience.The luggage strap on the back is a great design to attach to your luggage securely.
• EXTERNAL USB CHARGING PORT:This water resistant backpack with built in USB charger outside and built in charging cable inside,enable to charge your phone without opening the large backpack while traveling or walking.Please note that the power bank are not included in the package.
• SUITABLE FOR VARIOUS OCCASIONS:①4 carrying styles can help to free your hand and sometimes free your shoulder& back.You can carry on back, portable horizontally and vertically, attach on the luggage.②Perfect for business traveling, college students and outdoor activities in daily life.

wuayur

• [Cabin Approved Size] The dimensions of the backpack are 55x34x18cm (21.6 x 13.4 x 7 Inch). You can carry it onto an airplane, demensional design meets the maximum size allowed by IATA flights, easy to carry around. Sufficient room for a 17” laptop and clothes for short trip or international travel.
• [Ingenious Structure] Main pocket x 2, laptop compartment x 2 (fit for a 13” tablet and 17” laptop respectively), change pocket x 2, toiletry bag x 1, and many other pockets for different purposes.
• [Easy-to-Carry] The backpack is light to carry. Two handles are set both on top and one side of the backpack allowing a more flexible carrying experience. You can carry it vertically or horizontally, or by fixing it on a trolley. A great choice for travelers, students and weekenders.
• [Made to Last] The backpack is made up of durable abrasion, scratch and splash resistant materials. A free rain cover is packaged for you to travel carefree on rainy days.
• [Anti-theft Design] The main bag adopts a dual zipper design. The two lock heads can be locked in the middle to protect your belongings from theft. It’s very convenient for you to reach your precious items.

Inateck

• GLOBAL COMPANION WOMENS 40L - Backpack crafted for a woman's body with a narrower shoulder strap profile and tilted hip belt, offering supreme comfort & ergonomic support; Backpack Dimensions: 13.75 x 21.5 x 8 in | 3 lbs 8 oz
• ORGANIZATIONAL WONDER - A well-thought-out pocket for every possible travel essential; a bag designed to keep you moving, no matter where the map may lead you
• MADE FOR ADVENTURE - Fixed suspension favors both load stability and comfort with moisture-wicking padded backpack straps, back panel and hip belt
• SUITCASE TO BACKPACK - Top, bottom & side haul handles make it easier to lift and tuck the bag away in an overhead bin as a carry-on, carry luggage as a suitcase or as a backpack
• NO MATTER WHAT WARRANTY - Eagle Creek's Warranty covers the Lifetime Warranty promise plus the added insurance of repair or replacement due to product failure during the product lifetime, regardless of the cause

eagle creek