
















Men's Expandable Anti-Theft Backpack, 35 or 45 L
$179.90
10% off your first order
with the code BIENVENUE10
Offer valid until Sunday, October 25
- Free shipping
- 30-day returns
- Secure payment
Specifications
- Capacity: 35 L
- Laptop fit: up to 15.6 inches
- Material: nylon Oxford fabric, water-resistant
- External USB port with built-in cable (power bank not included)
- Expandable thickness: 16 to 23 cm (6.3 to 9.1 in)
- Padded, breathable shoulder straps and back panel
- Hidden compartments and anti-theft pockets
- Closures: hidden zippers
- Back strap to fit over a suitcase trolley handle
- Rain cover: no
- Measurement tolerance: ±1 to 3 cm (0.4 to 1.2 in)
Description
The expandable anti-theft backpack for men that elevates your everyday: elegant, sturdy and ready for all your adventures
You dream of a discreet, stylish companion that takes you from the office to the airport with no compromise on organization or security. This expandable anti-theft backpack for men combines clean design and performance, ideal for city commutes, classes and weekend getaways. Its anti-theft pockets close with hidden zippers, an external USB port with a built-in cable lets you charge on the move, and a strap slides it over the handle of your suitcase. Made of sturdy, water-repellent nylon Oxford, it protects your devices and documents from the rain and the bumps of daily life while staying light and comfortable. A true essential for keeping up the pace, stress-free.
Why choose this men’s backpack for your travels
Its dedicated pocket fits a laptop up to 15.6 inches, well padded to absorb impacts. The multiple compartments and anti-theft pockets with discreet closures keep your wallet, cables and passport close at hand and out of sight. The external USB port with built-in cable lets you charge your phone on the go, just connect your power bank, not included. As a result, you stay connected and organized everywhere. As an anti-theft laptop backpack for men, it keeps your computer and valuables protected on every trip.
All-day comfort and adjustable capacity
The breathable back panel and ergonomic shoulder straps reduce fatigue on long days. With 35 L of volume and a zippered expansion that takes the thickness from about 16 to 23 cm (6.3 to 9.1 in), you gain room for clothes, files and accessories. The luggage strap fits over the trolley handle, perfect for moving smoothly through train stations and airports. A feature appreciated by many travelers and students. The gray anti-theft backpack and the black one both come in 35 L or 45 L.
Ready for work, college and city breaks
Versatile and unisex, this backpack built for travel pairs a business look with outdoor practicality. If you fly carry-on only, also check out our carry-on backpack 40x20x25, to browse with our whole travel backpacks collection. You will find this style among our anti-theft backpacks too. Complete your set and travel light. Add this style to your cart now and make this men’s backpack your trusted ally for every departure.
Shipping & returns
Shipping
Free tracked shipping to the United States, in 7 to 12 business days.
As soon as your order ships, you receive an email with a tracking link.
Returns
You have 30 days from delivery to request a return.
See our return policy for the conditions.
Why choose us?
At Galerie Sac à Dos, we believe a bag does more than carry your things.
It goes with you through your days, your plans and your getaways, and reflects the way you live.
That is why every style in our collection is carefully selected to combine style, comfort and durability, with no compromise.
Backpacks designed for real life
For work, classes, travel, hiking or family outings, our bags adapt to every use.
Well-planned compartments, sturdy materials and careful comfort. Every detail counts to make your everyday life easier.
Style and function together
Every style combines careful design with modern practicality.
Classic, sporty or colorful, your bag stays practical, comfortable and true to your style.
Tested quality, lasting finishes
We favor durable materials (premium canvas, vegan leather, high-density polyester) and reinforced stitching, for a bag that keeps its shape and lasts.
A responsible and transparent selection
No overproduction and no empty promises, only pieces chosen for their reliability, their comfort and their timeless look.
Your satisfaction first
Free shipping, easy 30-day returns and responsive customer service, because buying online should be as simple and enjoyable as planning your next adventure.
About Galerie Sac à Dos
At Galerie Sac à Dos, we believe a good bag can change the way you live, travel and express yourself.
We don’t make bags, we select them. Every style is carefully chosen from suppliers who share our values: quality, comfort and lasting style.
From the clean-lined city bag to the rugged hiking backpack, and the kids’ styles too, every piece reflects our standards: thoughtful design, reliable materials and a timeless look.
No passing trends, no compromise. Just bags made to stay with you for a long time, with confidence and personality.
Frequently Asked Questions
Are the materials durable and environmentally friendly?
We favor suppliers that use strong, quality materials, selected for their durability and their lower impact on the environment.
Does the product look exactly like the photos on the site?
Absolutely. All our photos are taken of the real products, with no misleading retouching. Colors may vary slightly depending on the lighting or the screen you use.
How do I track my order?
As soon as your order ships, you receive an email with a tracking link to follow your package in real time.
Is payment on your site secure?
Yes, we use SSL security, which keeps your data private and protected. Your payment details are never stored.
What should I do if my package does not arrive or arrives damaged?
Contact our customer service right away. We will open an investigation with the carrier and, if needed, arrange a replacement or a refund as quickly as possible.
How can I contact you with a question before or after my order?
You can contact us through the contact form on the site or by email at contact@galeriesacados.com. We reply within 24 business hours.





