Does it fit under the airplane seat?

Thank you for your interest in the Thule Aion Travel Backpack! When "comfortably" full, the backpack measures 11.02 x 11.81 x 18.5 inches. I suggest contacting your preferred airline to see if that matches their recommended specifications for carry-on or personal item sizes.

Can you attach/slide it on the handle of a roller bag for added convenience?

Yes. There’s a panel on the back that slips over the handle you pull the suitcase with.

Hi! The black pack has this "envelope" shape at the front like in the picture, or the same front "straight line" design as the nutria color?

Thank you for your question. The different colors of the 28L version of the Thule Aion backpack both have the "envelope" styling on the front of the bag. The "straight line" seam is present on all colors of the 40L version of the backpack. It appears there is an error in the images on the page. I notified Thule's Amazon team of the discrepancy.

スーリーリュック Aion Travel Backpack 40l

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎒 Travel smart, stay fresh, and carry with confidence.

MODULAR COMFORT - Compatible with Thule Aion Sling Bag as a hip belt for enhanced load support and quick access.
TECH SAVVY STORAGE - Dedicated padded pocket fits laptops up to 16 inches and tablets up to 12.9 inches securely.
ODOR MOISTURE BARRIER - Removable TPU roll-top bag locks in dirt, moisture, and smells—perfect for gym gear or wet clothes.
ECO CONSCIOUS DURABILITY - Crafted from 100% recycled polyester with Bluesign certification and PFC-free water-resistant coating.
MAXIMIZED CARRY ON READY - 40L spacious design meets most airline carry-on standards for seamless travel.

The Thule Aion Travel Backpack 40L is a premium, eco-friendly carry-on backpack designed for the modern professional. Featuring a removable TPU-lined roll-top bag to isolate odors and moisture, water-resistant waxed canvas, and a padded laptop compartment for devices up to 16 inches, it combines durability with smart organization. Its compatibility with the Thule Aion Sling Bag adds modular support, making it the ultimate travel companion for millennial managers who demand style, function, and sustainability.

Specifications

ASIN	B09NHW5799
ASIN	B0FN89LPMY
Age Range Description	Adult
Amazon Bestseller	#228,898 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #2,127 in Men's Casual Daypack Backpacks
Apparel Closure Type	Zipper
Apparel Fabric Stretch	No Stretch
Apparel Fabric Weight Class	Medium Weight
Backpack Harness Type	S-Curve Harness
Brand Name	Thule
Color	Nutria
Compatible Device Size Maximum	16 Inches
Customer Reviews	4.4 4.4 out of 5 stars (284)
Date First Available	August 21, 2025
Department	ユニセックス大人
Fabric Type	P600 Polyester Waxed Canvas
Fit Type	Adjustable
Fit to Size Sentiment	Positive
Global Trade Identification Number	00085854252089
Item Dimensions D x W x H	23D x 33W x 52H cm
Item Type Name	Backpack
Item Weight	1.45 Kilograms
Lining Description	cloth
Manufacturer	THULE(スーリー)
Manufacturer	THULE(スーリー)
Manufacturer Part Number	3204724
Material Type	P600 Polyester Waxed Canvas
Model Name	Thule Aion Travel Backpack 40L
Number Of Pockets	5
Number of Compartments	5
Number of Items	1
Other Special Features of the Product	Roll top bag, zip pocket, padded storage pocket
Outer Material	Polyester
Pattern	Solid
Product Style	Casual Bag
Size	40 l
Sport Type	Swimming
Storage Volume	40 Liters
Strap Size	Medium
Strap Type	Removable Strap
Style Number	3204724
Theme	No theme
UPC	085854252089
Unit Count	1 Count
Water Resistance Level	Water Resistant
Zippered Compartment Count	3

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Good experience, but the tracking updates could be better.

2 months ago

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