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Availability:
16 left in stock
Arrives
Tuesday, Mar 17
Recently Viewed
Color: Nutria
Size: 40L
Features
- 100% Polyester
- Imported
- Made with bluesign approved, 100% recycled polyester fabrics and a waxed canvas with a PFC free durable water-resistant coating
- Removable TPU rolltop bag tucks away after use and allows you to store items without odor, dirt or moisture spreading to the rest the bag
- Padded storage protects up to a 17" laptop
- Zippered top pocket keeps small items secure, organized and within reach
- Compatible with the Thule Aion Sling Bag which doubles up as a supportive hip belt (sold separately)
- Actual material appearance may vary, the Thule Aion waxed canvas fabric is intended to have a broken-in appearance straight out of the box. Due to the nature of this fabric, slight marks or variances in color may be visible.
- Dedicated water bottle pocket keeps your bottle secure and within reach
- Internal zippered pocket stores a phone, charger and other small items during travel
- Internal compression straps keep items secure during travel
- Compliant with most airlines carry on requirements
Description
Get for yourself the epitome of ease in the form of the Thule 28 L Aion Backpack. Cotton construction. Two interior zippered compartments. Zippered closure. Exterior side unzippered pockets. Monochromatic and solid patterned.
Item Package Dimensions L x W x H: 22 x 17 x 5 inches
Package Weight: 1.5 Kilograms
Item Dimensions LxWxH: 12.99 x 20.47 x 9.06 inches
Item Weight: 1.45 Kilograms
Brand Name: Thule
Warranty Description: Limited Lifetime
Model Name: Aion Backpack 40l
Color: Nutria
Material: Polyester
Suggested Users: unisex-adult
Number of Items: 1
Manufacturer: Thule
Part Number: 3204724
Model Year: 2022
Style: Aion Backpack 40l
Included Components: Travel and duffel bag
Outer Material: Polyester
Size: 40L
Sport Type: Travelling
Age Range Description: Adult
Units: 1.0 Count
Capacity Total: 40 Liters
Date First Available: February 1, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Mar 17
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black
Size: 40L
I have a few semi high end travel backpacks, I'm a one bag traveler, if some place I can't go without carrying only a backpack, I just don't go. I also never check my bags, if I can't carry it on a plane, I don't use it. So a high quality and high capacity backpack is very important to me. I'm not a backpacker, I don't walk around anywhere with my backpack. The only place I will be carrying one is at the airport, so even though comfort is important, it's not on the top of my list. The Thule 40l feels comfortable enough. It doesn't come with a hip strap, but I never use one anyway. It has a very roomy main compartment, comes with compression straps, a builtin detachable wet bag, a small builtin mesh toiletry zip compartment, and a full length zip compartment for additional organization. The laptop compartment is also very large, even with a laptop and a tablet, it still has room for stuff. Since I travel light, I only carry a 12 inch laptop, so I will be using the laptop compartment for clothing in compression cubes or other stuff. The front organizational pocket is only 1/2 way deep of the bag, wish it was larger so I can fit a light jacket along with miscellaneous stuff. The hidden pocket at the back is great for passport, wallet and quick access to travel documents. There is one external water bottle pocket on the right side, has no strap, but feels snug enough. I wouldn't flip the bag over, the water bottle could fall out. I saw people complaining about the waxed canvas, saying it looks dirty and scratched upon arrival. My bag arrived clean as whistle, not a single scratch on it. I tried scratching it a few times with my finger nails to see if it would leave a mark, it didn't, so I'm not too worried about it looking ugly or "full of character" after a few uses. Not sure if the material is really water resistant, not going to test it, don't plan on walking in the rain or dunking it in a puddle. My trips are usually 2-3 weeks long, I travel to many parts of the world with backpacks ranging in sizes from 35l to 45l. This bag is 40l, should be big enough to carry 10 days of light clothes and toiletries. Men's clothing is bulkier and heavier than women's, my wife packs light too, she can literally fit 2-3 weeks of light clothes in this 40l backpack. No, we never go anywhere cold, hate the cold. :). The bag is made in Vietnam, a bit disappointing, was hoping it'd be made in a Western country. However, the construction seems solid and durable, only time will tell if it will hold up. At $200 price point, it's better made or equivalent to some of the more expensive backpacks on the market, and exceeds bags in its same class, Peak Design 45l or Osprey Porter for example, both of which I also own. If you are also a one bag traveler, get the 40l version. If you carry a backpack in addition to check luggage, this bag might be too big, get the 28l one.
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Reviewed in the United States on February 3, 2024 by Crisis
Color: Black
Size: 28L
This is a really nice looking backpack with some useful features and pretty comfortable to carry too. Really solid construction with awesome zippers and nice water resistant material. Things I like... - Really nice zippers - looks nice - expandable from 28L to 32L - few good little organization pockets in front - stash pocket in top back - nice interior setup that can be split or used as one large compartment - interior thin waterproof section to keep papers dry OR separate something wet or a few dirty clothes - comfortable side carry handle - fits 32oz Nalgene bottle - luggage pass through Changes I wish it had... - remove that front little handle, looks weird sticking out. Just make it a little incognito strap if you gotta put something there. And back top handle not comfortable to grab, make it a little more comfortable - wish front had a quick access zip pocket for little stuff - wish there was a better dedicated pocket on top to stash and protect sunglasses - the little zipper pulls on a couple zippers sort of stick out and wish they just laid against bag - maybe a couple more little zipper stash pockets inside would be good - wish bag was like 1-2" longer top to bottom (I'm 6' tall) so it would just fit more long ways vertical on back as opposed to sticking further out. Overall a really solid, nice looking, functional bag w some great features and better than 95%+ of what you'll find in this size and price range.
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Reviewed in the United States on September 12, 2024 by A Thoughtful Customer
Color: Black
Size: 40L
The most versatile backpack I've ever had. Quality - A+. I own several Thule products, and this is my go to for light to medium travel. Fits all clothing, paperwork, toiletries, accessories etc. Excellent laptop protection and easy access compartment for carry-on. If you spend the night anywhere but home, this backpack is a necessity. Stow the straps and carry with the side handle if you'd like. Also fits perfectly and tightly on a roller. Excellent value for the money.
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Reviewed in the United States on January 3, 2026 by Nick
Color: Black
Size: 28L
Crafty and good. Reliable and flexible. It is though a bit heavy and it alone means some weight that other models do not have.
Reviewed in the United States on January 28, 2026 by Edu
Color: Nutria
Size: 40L
So sturdy. Love the color. Very stylish and practical and functional.
Reviewed in the United States on February 3, 2026 by Junye Li
Color: Black
Size: 28L
I've long been a fan of one of Thule's USA-based competitors (and have over a dozen of that company's backpacks to prove it.) But a colleague who (like me) does a lot of international travel recently recommend I try this Thule Aion 28+4 liter pack. Trusting his judgment, I bought one to give it a try... And I'm so glad it did! I took it on a recent domestic trip (before putting it to the international test.) It holds every bit as much if not more than the 26+6 expandable pack I've been using from their competitor. While this Thule is a bit heavier, it is also more efficient with better compartmentalization. It's also more versatile as you can incorporate the Aion Sling Bag as a belt strap. The finish is waxed canvas so it does mark up, but that distressed look is a bit of the charm of this series. The only thing I'd change is adding a second beverage pouch and perhaps a few more attachment points. Overall, though, a welcome upgrade to the other company's expandable that's been my travel companion for the last few years.
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Reviewed in the United States on December 14, 2025 by Doug Rabold