Knack’s large travel backpacks are the perfect size when you need extra space but want lightweight, comfortable carrying. Weighing in at just a bit more than 3 grande coffees, Knack's large travel backpacks won't weigh you down but will provide up to 46L of storage and hold four complete changes of clothes. Custom water-resistant fabrics, padded shoulder straps, and removable hip belts and sternum strap help you carry up to 40 pounds stylishly and comfortably. With smart compartments for easy access, there’s always room for extra clothes and all the clothing you need to keep the comfort going for days.

Sort by

2 products
Filter and sort
Filter and sort

2 products

Laptop Size
Clear
Outfits
Clear
Clear

2 products

The Best 40L Travel Backpacks

Looking for the best large travel backpacks for men and women? Knack’s 40L travel backpacks were designed by seasoned travelers to be exactly that. The patented, expandable travel compartment gives you over 50% more carrying capacity for long journeys, then compacts for everyday use when you arrive. Our durable, water-resistant material looks sleek and professional, ensuring you look great and your gear stays dry. With padded back panels and shoulder straps, sternum straps and removable waist straps, you’ll enjoy a secure and comfortable carry wherever your trip takes you.provide a secure and comfortable carry. This travel backpack is the one pack that gives you extra space for all of your items, from work essentials to your tablet, and even enough material for a weekend trip, which makes this bag truly the only travel bag you’ll need for any trip.

40L Backpack Features

  • Stay Organized

    In our 40L backpacks, we have a separate, patented, expandable suitcase compartment that makes packing for travel easy by giving you 50% more carrying capacity. This extra storage section makes this bag a great travel bag for extended trips by holding up to four changes of clothes with an easy-access suitcase lid.

  • Business Trip Travel Set Series 2 Backpack Knack

    Expand Your Horizons

    Keep all your gear secure and easy to find with next-level organization, including everything from fleece and mesh accessory pockets, a hidden side-zip water bottle pocket and a padded laptop pocket. Travel in style and comfort with easy access compartments made for light packers who like to be on the go.

  • Extended Stay S1 Travel Set Backpack Knack

    Be Compatible

    Our hidden trolley sleeve is a smart design feature that lets you slip your Knack backpack over the handle of nearly any wheeled luggage, making travel simpler.

About Knack

Knack sprang from the simple observation that too many people were carrying too many bags at the same time. This aha moment spurred our passion to live a One Bag Life. So we pulled together a dedicated group of frequent travelers and bag enthusiasts––from Tumi, Coach, North Face, Samsonite, and eBags––to create the one bag that’s clever enough to replace two.

Shop 40L Travel Backpacks FAQs

Why choose the Knack 40L travel backpack

With 40L of space, this travel backpack holds extra clothes, work items, gear, and snacks for days. Padded shoulder straps, a hip belt, and a sternum strap make it comfortable for long trips or weekend trips.
How does it keep my items organized?

Smart pockets—including a padded laptop pocket, hidden water bottle pocket, and fleece accessory pockets—plus the expandable main compartment, give easy access to all your stuff.
Can I use it with wheeled luggage?

Yes. The hidden trolley sleeve is a clever design feature that slips over most luggage handles. Durable materials, reinforced seams, and comfortable straps make carrying gear easy and secure.

Testimonials

This bag has exceeded my expectations and I have high expectations being that my last bag was a Tumi. The quality is on point. The number of pockets is impressive and I have never been more organized in my life! I was skeptical that I can really pack for a 3 day work trip in a single bag but it is absolutely doable. Carrying one bag is so much more efficient.

Drew D.

This is a great backpack. I’ve used mine for years now for business travel. And it is by far the best backpack I’ve ever had. It’s well-made, intelligently designed and highly functional. I do not work with or have any affiliation with the company. But I can tell you this is a great backpack. The ability to put a few pieces of clothing in there along with a computer, all the charging cords, etc. and a bunch of files, means that I can use a small roller carry-on as my second bag. So no checked bags for even week long work trips. I’d be surprised if anyone did not love this backpack.

RGS

I got this to carry around during a business trip/trade show. I had it delivered to my hotel and I spent the evening exploring the backpack. I absolutely cannot believe how much you're able to do with this backpack. I even made a couple gasps when I discovered yet another pocket or another cool thing, especially when I found the zipper to expand its size. Super functional, and can fit so much in it when needed, but can be made more compact when traveling. I would say that it is worth the investment, for sure.

Ryan H.

This was a great purchase. I am very satisfied with my decision to purchase this bag. It’s great for every day use and even better for traveling. I love that I am able to expand the bag to fit even more stuff in it. Traveling with this and my carryon suite case makes it less stressful when traveling for a long weekend.

Mark B.

Check out these blogs: