Knack's expandable backpacks are built for the gym and built for your toughest workouts. Antimicrobial lining, separate water bottle holder, and spacious interiors keep your gear organized. From the office to the locker room, Knack makes gym life easier than ever.

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Knack's Gym Backpacks

Our patented expandable packing compartment makes the Knack Pack one of the best gym backpacks around. Easily fit a towel, change of clothes, workout gear, water bottle and an extra pair of shoes. Looking for a great gym-to-work backpack? Knack’s antimicrobial lining keeps you smelling your best wherever you go. Our sleek and sophisticated, water-resistant fabric was inspired by tailored suits, so you look professional at the office. Our next-level organization pockets mean all your supplies are secure and within reach.

Gym Backpack Features

  • Expand Your Horizons

    Easily pack a towel, pair of shoes and change of clothes in Knack’s separate, patented, expandable packing compartment with easy-access suitcase lid.

  • Smell Like A Rose

    Our durable, water-resistant body fabric keeps your gear dry and protected, while our antimicrobial lining ensures you smell your best even when your bag is full of sweaty clothes.

  • Stay Connected

    Our easy-access, padded side-zip computer pocket protects your tech and makes going from gym to work easier than ever.

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 Gym Backpacks FAQs

Is the Knack Pack suitable for both gym and work use?

Yes, all Knack Packs are designed to be 2-in-1 versatile backpacks that function well as both an everyday carry for work and a gym bag, thanks to the expandable compartment and organized pockets - you can keep all of your gym and everyday items separate and combined at the same time.

How much gym gear can the Knack Pack hold?

Honestly? It depends on the size chosen, but we've been told more than you'd expect from something that doesn't scream "gym bag." We're talking your laptop, work essentials, plus a full change of clothes, sneakers, yoga mat, water bottle, and all those little things you actually need (yes, even your dry shampoo). The main compartment is roomy, and with all the smart pockets and compartments, you can actually fit your entire life in there without it looking like a hot mess. No more showing up to client calls with a massive duffel bag in the background of your Zoom – this is the bag that gets you from boardroom to HIIT class without missing a beat.

P.S. If you need more room we recommend sizing up (Series 1 or Series 2 Large, or the Convertible Duffle will give you the most space for work and gym items whereas the medium Knack Pack can fit 2–3 days' worth of clothes, shoes, and a laptop, making it suitable for carrying workout clothes, sneakers, and toiletries alongside work items.

Is the Knack Pack comfortable to carry when loaded with gym gear?

Okay, real talk – we've all been there with a bag digging into our shoulders while we're trying to look put-together on the subway. Our Knack Pack's padded straps and ergonomic design truly distribute weight evenly, so you're not doing that awkward shoulder-switching dance every few blocks. Even when it's packed with your laptop, gym clothes, and post-workout skincare routine (because we see you), it sits comfortably on your back. Plus, the chest and waist straps capabilities (waist straps sold separately, and chest straps only sold with certain sizes) mean you can actually power-walk to that 6 AM spin class without feeling like you're carrying a small child on your back.

Is the Knack Pack water-resistant enough for gym use?

You know those mornings when it's drizzling but you still need to get to the gym before work? Or when your water bottle decides to leak all over everything? The Knack Pack's got you covered with water-resistant materials that protect your tech and clothes from life's little surprises. We're not saying you should use it as a pool float, but a little rain, gym steam, or the occasional smoothie spill won't ruin your day (or your laptop). The separate wet/dry compartments also mean your sweaty gym clothes stay far away from your work presentation materials – because nobody needs that kind of stress in their life.

Testimonials

The bag I’ve been searching for. For years, I’ve been looking for the perfect bag to carry with me to work, hold my gym clothes, and also work as a weekender. This bag has all of that and more.

C.J. | Series 1 Medium Expandable Knack Bag

Better than Expected! This bag is amazing! I am a pedestrian commuter in Boston and was so tired of lugging work backpack and gym bag a mile each way every day. The Large Knack bag solves it all.

Julie E. | Series 1 Large Expandable Knack Bag

Great City Bag (Gym and Office Use). I was looking for something very specific. I go to the gym in the morning before heading off to an office job, where I have to wear a suit. So I needed a bag that could hold a suit in the morning, but not look too clunky when I go to the office. The Knack Bag is perfect.

Mike | Series 2 Medium Expandable Knack Bag

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