![Series 1: Medium Expandable Knack Pack® Backpack Knack Smoky Taupe](http://knackbags.com/cdn/shop/files/main_1.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_2.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack Savile Gray](http://knackbags.com/cdn/shop/files/s1mediumgrayanglesized.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack Savile Gray](http://knackbags.com/cdn/shop/products/NewS1NoLogoMediumGray.jpg?v=1734377781&width=3840)
![](http://knackbags.com/cdn/shop/files/preview_images/8e553965ee54450dbac8e8e72048beb0.thumbnail.0000000000.jpg?v=1696611566&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/gray.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/graysuitcase_5d94d625-0485-430d-a966-1d4e813e3ceb.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/graylaptop_4ef1a585-a2d1-484d-8a09-9faf2cc6d2c8.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/graymainpocket_b2c5506a-bab5-4ce7-a066-a037b5eefad8.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/graytriangle_f959742d-8da3-4c77-a34a-f4da7766392a.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/graytrolley_ab53c8fb-ae8b-459b-a11a-650fad12e31c.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/graymodel_5c928204-1006-4285-832f-8c5ae422d29b.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/carolina_blue_option_4_new_bc970f0e-ff81-41f5-b5b7-13901706d78b.jpg?v=1729544849&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/carolina_blue_front_aef8f80c-87da-4b89-ad34-4506d6aed57c.jpg?v=1729544851&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/carolina_blue_laptop_1bb0d8b8-25d0-42f0-9e6a-d8c0013f1190.jpg?v=1729544816&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack Stealth Black](http://knackbags.com/cdn/shop/files/s1mediumblackanglesized.jpg?v=1734377781&width=3840)
![Side view, unexpanded for day use. 27 liters unexpanded. Stealth Black](http://knackbags.com/cdn/shop/products/NewS1NoLogoMediumBlack.jpg?v=1734377781&width=3840)
![](http://knackbags.com/cdn/shop/files/preview_images/8838613177e54b09be16c0f8091b539c.thumbnail.0000000000.jpg?v=1696952730&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/black.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/blacksuitcase_4d27ddfe-d5ef-458c-8fc7-0139349ee4be.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/blacklaptop_fe0f64cc-ba4b-470c-85a7-8e75ac8728dc.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/blackmainpocket_deafda91-413e-4276-8769-ea7743cc861f.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/blacktriangle.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/blacktrolley.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/blackmodel_d75ac92f-9513-4ea5-8617-b74992bd3faa.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack Indigo Blue](http://knackbags.com/cdn/shop/files/s1mediumblueanglesized.jpg?v=1734377781&width=3840)
![Side view, expanded for travel use. 39 liters expanded. Indigo Blue](http://knackbags.com/cdn/shop/products/NewS1NoLogoMediumBlue.jpg?v=1734377781&width=3840)
![](http://knackbags.com/cdn/shop/files/preview_images/1a83f8c8dd51439ab9d6a2e7790ec672.thumbnail.0000000000.jpg?v=1696952878&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/blue.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/bluesuitcase_73502290-ffba-48e3-bcdb-e91a52e70c80.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/bluelaptop_56e323f1-b022-47a9-a825-5cc13fd51e2e.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/bluemainpocket_3440f2fb-ba1c-4a79-b16a-5f8960a4e3d4.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/bluetriangle_45c2d469-b17b-4021-855b-de3d41e66ac2.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/bluetrolley_6c1be009-9575-4bd1-9363-38452d822f3c.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/bluemodel_a0bcabd9-7322-47a1-8817-9390ed81e93d.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/carolina_blue_suitcase_1d817093-608d-4b39-a002-fa91b213818a.jpg?v=1729544808&width=3840)
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![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_4.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_9.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_6.jpg?v=1734377781&width=3840)
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![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_7.jpg?v=1731929633&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_3.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_8.jpg?v=1734377781&width=3840)
![Series 1: Medium Expandable Knack Pack® Backpack Knack](http://knackbags.com/cdn/shop/files/main_5.jpg?v=1734377781&width=3840)
Product Details
Dimensions
Volume
Weight
Material
How to live a one bag life - every day
![STAY CONNECTED](https://knackbags.com/cdn/shop/files/main_6.jpg?v=1731929624&width=750)
STAY CONNECTED
Use the Knack Pack’s padded side computer pocket to always keep your laptop with you. The pocket fits 15.6” laptops (measured diagonally) and its suspended bottom helps keep your computer safely off the floor whenever you put your bag down.
![STAY CONNECTED](https://knackbags.com/cdn/shop/files/main_6.jpg?v=1731929624&width=750)
![ORGANIZE THOSE CORDS](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-8.jpg?v=1732753737)
ORGANIZE THOSE CORDS
The easy access charger and battery pocket helps keep all those cords, chargers, adapters, batteries and USB sticks that you can’t live without in one neat place instead of rolling around in the bottom of your bag.
![ORGANIZE THOSE CORDS](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-8.jpg?v=1732753737)
![BRING YOUR SHADES](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-7.jpg?v=1732753737)
BRING YOUR SHADES
The fleece-lined, soft case sunglasses pocket is designed for easy access and protection. And there’s a bonus pocket behind it for other items you need at a minute’s notice.
![BRING YOUR SHADES](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-7.jpg?v=1732753737)
![HOLD THE CARDS](https://knackbags.com/cdn/shop/files/main_5.jpg?v=1731929616&width=750)
HOLD THE CARDS
Feel free to throw in a bunch of business cards - there’s plenty of room in the organizer panel. Also, rest assured that your passport and wallet are safe. Our RFID blocking fabric protects your RFID chip cards from unwanted skimming.
![HOLD THE CARDS](https://knackbags.com/cdn/shop/files/main_5.jpg?v=1731929616&width=750)
![STAY ON KEY](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/S1M_5_Stay_On_Key.jpg?v=1723097448)
STAY ON KEY
Our removable, easy-access key leash makes it a breeze to bring your keys with you everywhere.
![STAY ON KEY](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/S1M_5_Stay_On_Key.jpg?v=1723097448)
![CARRY IT ALL](https://knackbags.com/cdn/shop/files/main_7.jpg?v=1731929633&width=750)
CARRY IT ALL
The Knack Pack’s main compartment has two generously-sized, soft monofilament mesh, zip organization pockets. Our special mesh makes it easy to always see all the things you stuff into the pockets. If that’s not enough, there’s a protective fleece-lined pocket to keep your tablet safe and sound.
![CARRY IT ALL](https://knackbags.com/cdn/shop/files/main_7.jpg?v=1731929633&width=750)
![DON’T LOOK LIKE A HIKER](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/S1M_7_Dont_Look_Like_A_Hiker.jpg?v=1723097449)
DON’T LOOK LIKE A HIKER
Only you will know that the sleek, hidden, zip-away side water bottle pocket holds your 17 oz S'well™/ 24 oz Hydro Flask™ bottles/ 20 oz Knack Insulated bottle.
![DON’T LOOK LIKE A HIKER](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/S1M_7_Dont_Look_Like_A_Hiker.jpg?v=1723097449)
How to live a one bag life - Travel
![EXPAND YOUR HORIZONS](https://knackbags.com/cdn/shop/files/main_4.jpg?v=1731929628&width=750)
EXPAND YOUR HORIZONS
Our patent-pending, hidden expansion compartment is the secret sauce that makes Knack the perfect One Bag™ Life backpack. Simply unzip and expand the compartment to get over 40% more carrying capacity. Unexpanded: 27 Liters. Expanded: 39 Liters.
![EXPAND YOUR HORIZONS](https://knackbags.com/cdn/shop/files/main_4.jpg?v=1731929628&width=750)
![PACK IT IN](https://knackbags.com/cdn/shop/files/main_9.jpg?v=1731929621&width=750)
PACK IT IN
Not sure about staying in town after your business trip ends? Pack our patent-pending, hidden suitcase compartment with a change of clothes and live spontaneously. Packing capacity: 12 Liters.
![PACK IT IN](https://knackbags.com/cdn/shop/files/main_9.jpg?v=1731929621&width=750)
![LOCK ON](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-3.jpg?v=1732753737)
LOCK ON
Keep everything secure during your journeys with lockable zippers on the hidden suitcase and the main compartment. (Lock not included)
![LOCK ON](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-3.jpg?v=1732753737)
![BE COMPATIBLE](https://knackbags.com/cdn/shop/files/main_3.jpg?v=1731929630&width=750)
BE COMPATIBLE
Sometimes, your trips require a big piece of wheeled luggage. Don’t worry, it’s easy to bring your Knack Pack along too. Our hidden trolley sleeve lets you slip your Knack over the handle of almost all sizes of wheeled luggage.
![BE COMPATIBLE](https://knackbags.com/cdn/shop/files/main_3.jpg?v=1731929630&width=750)
![STAY FLEXIBLE](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-6.jpg?v=1732753737)
STAY FLEXIBLE
Our adjustable sternum strap does a great job of distributing weight when you’ve really packed your Knack. But if you prefer a cleaner look, the strap unhooks for easy removal.
![STAY FLEXIBLE](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-6.jpg?v=1732753737)
![BE PREPARED](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-4.jpg?v=1732753737)
BE PREPARED
It should never happen, but if that flight attendant makes you check your backpack, don’t worry about your straps getting caught on the luggage carousel. Simply unclip your straps and stow them out of the way in the back panel pocket.
![BE PREPARED](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-4.jpg?v=1732753737)
![KEEP DRY](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-2.jpg?v=1732753737)
KEEP DRY
While we don’t recommend swimming with your Knack Pack, our specially coated fabric and reverse coil zippers help keep your belongings dry in all types of weather.
![KEEP DRY](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-2.jpg?v=1732753737)
![SMELL LIKE A ROSE](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/S1M_15_Smell_Rose.jpg?v=1723098104)
SMELL LIKE A ROSE
Our custom-designed lining has a special antimicrobial treatment that helps to keep your Knack Pack fresh even when it’s filled with dirty or sweaty clothes.
![SMELL LIKE A ROSE](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/S1M_15_Smell_Rose.jpg?v=1723098104)
![LOOK SHARP](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-1.jpg?v=1732753737)
LOOK SHARP
Inspired by tailored clothing fabrics, Knack’s custom-designed, two-tone fabric is both lightweight and durable.
![LOOK SHARP](https://cdn.shopify.com/s/files/1/0023/8767/3149/files/taupe-1.jpg?v=1732753737)