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.

Aion Backpack | Desertcart South Korea

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Description

🌍 Travel smart, pack light, and stay effortlessly organized with the Aion Backpack.

MAX CARRY ON READY - 40L capacity fits airline carry-on limits for seamless travel.
TECH SAVVY STORAGE - Padded laptop compartment fits up to 17" devices plus multiple organized pockets for essentials.
MODULAR TRAVEL SYSTEM - Compatible with Thule Aion Sling Bag that doubles as a supportive hip belt (sold separately).
ODOR MOISTURE CONTROL - Removable TPU rolltop bag isolates wet or dirty items to keep your gear fresh.
ECO CONSCIOUS DURABILITY - Made with bluesign approved, 100% recycled polyester and waxed canvas with PFC-free water resistance.

The Thule Aion Backpack 40L is a premium travel backpack designed for the modern professional traveler. Crafted from sustainable, bluesign approved recycled polyester with a durable, PFC-free water-resistant waxed canvas, it offers a spacious 40-liter capacity that complies with most airline carry-on requirements. Featuring a padded laptop compartment for devices up to 17", a removable TPU rolltop bag to isolate wet or dirty items, and multiple secure pockets for organization, it balances eco-conscious materials with practical, tech-friendly design. Compatible with the Thule Aion Sling Bag for enhanced support, this backpack is built for durability, style, and efficient travel.

Specifications

ASIN	B09NHW5799
Age Range Description	Adult
Apparel Closure Type	Zipper
Apparel Fabric Stretch	No Stretch
Backpack Design	Laptop Backpack
Best Sellers Rank	#133,746 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #194 in Casual Daypack Backpacks
Brand Name	Thule
Color	Nutria
Compatible Device Size Maximum	17 Inches
Customer Reviews	4.4 4.4 out of 5 stars (713)
Fabric Type	100% Polyester
Fit Type	backpack
Fit to Size Sentiment	Positive
Global Trade Identification Number	00085854252089
Included Components	Travel and duffel bag
Item Dimensions D x W x H	9.1"D x 13"W x 20.5"H
Item Shape	Rectangular
Item Type Name	Travel and duffel bag
Item Weight	1.45 Kilograms
Lining Description	Polyester
Manufacturer	Thule
Manufacturer Part Number	3204724
Material Type	Polyester
Model Name	Aion Backpack 40l
Number Of Pockets	4
Number of Compartments	4
Number of Items	1
Other Special Features of the Product	Water Resistant
Outer Material	Polyester
Pattern	Solid
Pocket Description	Utility Pocket
Product Care Instructions	Hand Wash Only
Product Style	Aion Backpack 40l
Recommended Uses For Product	Travel
School Type	High School
Shell Type	Soft Shell
Size	40L
Sleeve Length Description	Sleeveless
Sport Type	Travelling
Storage Volume	40 Liters
Strap Type	Shoulder Strap
Style Number	3204724
Subject Character	Sports
Theme	Space
UPC	085854252089
Unit Count	1.0 Count
Warranty Description	Limited Lifetime
Water Resistance Level	Water Resistant

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

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