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When you compare the pacsafe vs thule travel backpack options, you see two distinct approaches to gear. Both bags use recycled polyester, appealing to environmentally conscious travelers. The main difference lies in their design philosophy and capacity. Pacsafe focuses on security and compact urban use, while Thule prioritizes expandable volume and outdoor durability. You will choose based on whether you need anti-theft features or extra storage space for longer trips.
Capacity
25 liters
40 liters
Laptop Sleeve
15-inch padded sleeve
17-inch padded sleeve
Security Features
Lockable zippers, cut-proof mesh, RFID pocket
Not listed
Weight
2.2 pounds
3.2 pounds
Water Resistance
Water-resistant recycled polyester
Waxed canvas with PFC-free coating
Choose the first if
- You prioritize anti-theft security with lockable zippers and cut-proof material
- You need a lighter bag for daily commuting or short trips
- You want an RFID-blocking pocket for your credit cards and IDs
Choose the second if
- You need extra storage space for longer trips or more gear
- You carry a larger laptop up to 17 inches
- You prefer a durable waxed canvas exterior with a removable rolltop
Verdict
Choose the Pacsafe Metrosafe X if your priority is security and lightweight portability for urban environments. Select the Thule Aion 40L if you require more capacity and a rugged, weather-resistant design for extended travel. Both options use recycled materials, so your choice depends on your specific security and storage needs.
Pacsafe vs Thule Backpack Specs
Capacity
Edge: Thule Aion 40L Travel Backpack
Capacity is the first major difference. The Pacsafe Metrosafe X offers 25 liters, making it a compact option for daily commuting or short trips. In contrast, the Thule Aion provides 40 liters of space. This larger volume suits longer travel or carrying bulkier items. If you need extra room for gear, the Thule has the clear advantage. The Pacsafe is tighter, which can be beneficial for staying under airline carry-on limits or keeping a low profile in crowded urban environments. Choose based on how much you typically carry.
Laptop Size
Edge: Thule Aion 40L Travel Backpack
Both bags protect your computer, but they accommodate different screen sizes. The Pacsafe Metrosafe X features a padded sleeve for up to a 15-inch laptop. The Thule Aion goes further, offering padded storage for devices up to 17 inches. If you work with a larger screen or a 17-inch gaming laptop, the Thule is the safer choice. The Pacsafe is sufficient for standard 13 to 15-inch models. Check your device dimensions before deciding, as the Thule’s extra inch of clearance matters for larger machines.
Security Features
Edge: Pacsafe Metrosafe X 25L Anti-Theft
Security is where the Pacsafe shines. It includes lockable zippers, cut-proof lightweight steel mesh material, and an RFID blocking pocket. It also has a detachable anchor strap to secure the bag to fixtures. The Thule Aion data does not list anti-theft locks, cut-proof mesh, or RFID protection. It focuses on durable materials and organization instead. If your priority is preventing theft in high-risk areas, the Pacsafe provides specific hardware for that purpose. The Thule relies on general durability rather than specialized security mechanisms.
Weight
Edge: Pacsafe Metrosafe X 25L Anti-Theft
Weight affects comfort during long carries. The Pacsafe Metrosafe X weighs 2.2 pounds. The Thule Aion weighs 3.2 pounds. The Pacsafe is one pound lighter. This difference is noticeable when you are walking through airports or city streets all day. The Thule’s extra weight comes from its larger structure and waxed canvas components. If you prefer a lighter load on your shoulders, the Pacsafe is the better option. The Thule’s heft may be justified by its larger capacity, but the Pacsafe is objectively lighter.
Dimensions
Edge: Tie
Physical dimensions impact how the bag fits in overhead bins and under seats. The Pacsafe measures 18.9 inches in height, 12.2 inches in width, and 7.1 inches in depth. The Thule Aion is 20.5 inches wide, 9.06 inches deep, and 13 inches in length. The Thule is wider but shorter in height. The Pacsafe is taller and narrower. Your choice depends on whether you prioritize vertical height for stacking or width for lateral space. Both are travel backpacks, but their shapes differ significantly. Check your airline’s specific size restrictions before buying.
Choose the right pack for your needs
Urban commuter needing anti-theft security
Our pick: Pacsafe Metrosafe X 25L Anti-Theft
The Pacsafe Metrosafe X features lockable zippers and cut-proof steel mesh to deter theft. It includes an RFID blocking pocket for card safety. At 2.2 pounds, it is lightweight. The 25-liter capacity fits a 15-inch laptop and daily essentials without bulk. This compact design is ideal for navigating crowded city streets safely.
Traveler requiring extra packing volume
Our pick: Thule Aion 40L Travel Backpack
The Thule Aion offers 40 liters of space, significantly more than the Pacsafe. This volume accommodates longer trips or bulkier gear. It includes a removable rolltop to adjust capacity. The 17-inch laptop sleeve provides extra protection. The 3.2-pound weight supports the larger structure while maintaining durability for extended travel periods.
Eco-conscious user wanting versatile storage
Our pick: Thule Aion 40L Travel Backpack
Thule uses bluesign approved recycled polyester and a PFC-free water-resistant coating. The removable TPU rolltop keeps items odor-free and dry. Dedicated pockets secure water bottles and small electronics. This design prioritizes sustainable materials and organized storage for travelers who need adaptable packing solutions for varied environments and extended journeys.
Pacsafe Metrosafe X 25L Anti-Theft
Best for: Secure urban travel with a 15-inch laptop
- Capacity
- 25 L
- Max Laptop Size
- 15"
- Primary Material
- Recycled polyester
- Security Features
- Lockable zippers, cut-proof mesh, RFID
- Tablet Compartment Size
- 10"
- Type
- Anti-Theft
The Pacsafe Metrosafe X is a 25-liter anti-theft backpack designed for secure travel. It features lockable zippers, cut-proof steel mesh, and an RFID-blocking pocket. The bag includes padded sleeves for a 15-inch laptop and a 10-inch tablet. Weighing just 2.2 pounds, it offers durable recycled polyester construction. This compact pack suits urban explorers and commuters who prioritize theft prevention and organization over maximum storage capacity.
- Lockable zippers and cut-proof steel mesh deter theft
- Dedicated padded sleeves for 15-inch laptop and 10-inch tablet
- Lightweight 2.2-pound build for comfortable daily carrying
- RFID-blocking pocket protects credit cards and IDs
- 25-liter capacity is smaller than the 40-liter Thule Aion
- 7.1-inch depth limits bulk storage for extended trips
- 5-year warranty is shorter than typical industry standards for premium gear
- You need anti-theft features like lockable zippers for city travel
- You carry a 15-inch laptop and want dedicated padded protection
- You prefer a lightweight bag under 3 pounds for daily use
- You require more than 25 liters of packing space
- You need to carry bulky items that exceed the 7.1-inch depth
- You are traveling for over a week and need a 40-liter capacity
Verdict: Pacsafe Metrosafe X 25L Anti-Theft is ideal for travelers who prioritize security and laptop protection over large storage volume. It fits perfectly for short city trips where theft deterrence matters more than packing capacity.
Thule Aion 40L Travel Backpack
Best for: Travelers needing 17-inch laptop protection
- Capacity
- 40L
- Max Laptop Size
- 17"
- Primary Material
- Recycled polyester, waxed canvas
- Flight Compliance
- Carry-on compliant
- Dimensions
- 13 × 20.5 × 9.06 inches
- Weight
- 3.2 pounds
The Thule Aion 40L is a 3.2-pound pack built from recycled polyester and waxed canvas. It offers 40 liters of capacity and a padded compartment for up to a 17-inch laptop. The removable TPU rolltop keeps odors and moisture contained. A dedicated water bottle pocket and compatible hip belt add utility. This backpack suits travelers who need durable, organized carry for extended trips.
- 40-liter capacity fits 35-45L travel needs
- Padded storage protects laptops up to 17 inches
- Removable TPU rolltop isolates odors and moisture
- Made with 100% recycled polyester and waxed canvas
- 40-liter capacity is smaller than the 25L competitor's main compartment volume when fully expanded with accessories
- 3.2-pound weight is heavier than lighter travel packs
- Compatible hip belt is sold separately
- You need a dedicated compartment for a 17-inch laptop
- You want to isolate wet or smelly items with the TPU rolltop
- You prefer recycled materials in your gear
- You need a lighter pack under 3 pounds
- You want a fully integrated hip belt without buying extras
- You prefer a smaller 28-liter size for quick trips
Verdict: Thule Aion 40L Travel Backpack is a heavy-duty option for travelers who prioritize laptop protection and odor isolation. It fits those who need a 17-inch laptop sleeve and do not mind the extra 3.2-pound weight.
Specifications side by side
| Spec | Pacsafe Metrosafe X 25L Anti-Theft | Thule Aion 40L Travel Backpack |
|---|---|---|
| Capacity | 25 L | 40L |
| Max Laptop Size | 15" | 17" |
| Primary Material | Recycled polyester | Recycled polyester, waxed canvas |
| Security Features | Lockable zippers, cut-proof mesh, RFID | – |
| Tablet Compartment Size | 10" | – |
| Flight Compliance | – | Carry-on compliant |
| Features | Laptop Sleeve | – |
| Type | Anti-Theft | – |
| Laptop Size | 15.6-Inch Laptop | – |
| Color | Black | Nutria |
| Dimensions | 7.1 × 12.2 × 18.9 inches | 13 × 20.5 × 9.06 inches |
| Weight | 2.2 pounds | 3.2 pounds |
| Size | 25 liters | 40L |
| Model | 30645100 | 3204724 |
Frequently asked questions
Which backpack is better for carrying a large laptop?
The Thule Aion 40L Travel Backpack is the better choice if you need to carry a 17-inch laptop. Its dedicated sleeve accommodates larger devices, whereas the Pacsafe Metrosafe X is designed for 15.6-inch laptops. If your primary concern is protecting a bigger screen, the Thule provides the necessary space and protection.
How much does the Thule Aion weigh compared to the Pacsafe?
The Thule Aion 40L Travel Backpack weighs 3.2 pounds. The Pacsafe Metrosafe X 25L Anti-Theft is lighter at 2.2 pounds. This one-pound difference means the Pacsafe is easier to carry for short distances, while the Thule’s extra weight supports its larger 40-liter capacity and heavy-duty construction.
Is the Pacsafe Metrosafe suitable for long-term travel?
The Pacsafe Metrosafe X 25L Anti-Theft is best for short city trips rather than long-term travel. With a 25-liter capacity, it offers limited storage volume. It is ideal for urban commuters who prioritize security features like lockable zippers over packing large amounts of clothing or gear for extended journeys.
What dimensions should I expect from the Thule Aion?
The Thule Aion 40L Travel Backpack measures 20.5 inches in width, 13 inches in length, and 9.06 inches in height. These dimensions reflect its 40-liter volume, making it a substantial pack. You should ensure your carry-on space can accommodate these larger measurements compared to more compact travel bags.
Does the Pacsafe offer specific security features?
Yes, the Pacsafe Metrosafe X 25L Anti-Theft includes lockable zippers and cut-proof steel mesh. It also features an RFID blocking pocket to protect your cards. These attributes make it a secure option for travelers who are concerned about theft and want to keep their belongings safe in crowded urban environments.
Which bag has more storage space?
The Thule Aion 40L Travel Backpack has significantly more storage space with a 40-liter capacity. The Pacsafe Metrosafe X offers only 25 liters. If you need to pack more items for a longer trip, the Thule provides the extra room, while the Pacsafe is better for minimal packing needs.

