Knack Medium Expandable Backpack Unexpanded for day use
Knack Medium Expandable Backpack in green colour
Knack Medium Expandable Backpack Unexpanded for day use
Knack Medium Expandable Backpack Simple design with organization pockets
Knack Medium Expandable Backpack Unexpanded for day use
Knack Medium Expandable Backpack Simple design with organization pockets
Knack Medium Expandable Backpack Unexpanded for day use in orange
Knack Medium Expandable Backpack Simple design with organization pockets in orange
Knack Medium Expandable Backpack with Separate, patent-pending, expandable packing compartment holds 2 to 3 changes of clothes
Knack Medium Expandable Backpack with Built-in, fleece-lined, protective soft case sunglasses pocket
Knack Medium Expandable Backpack with Hidden, zip-away side water bottle pocket
Spacious main compartment with organization pockets, fleece-lined tablet pocket and key leash
Exterior charger and battery pocket
Easy-access front triangle pocket with business card slots and pen loops
Tuck-away back zip storage pocket for shoulder straps
Padded, side computer pocket fits up to 17" laptops (measured diagonally)
2 interior, see-through, soft monofilament mesh zip organization pockets
Unexpanded and expanded view of medium Knack (Model height: 5' 11").
Knack Medium Expandable Backpack Unexpanded for day use
Knack Medium Expandable Backpack in green colour
Knack Medium Expandable Backpack Unexpanded for day use
Knack Medium Expandable Backpack Simple design with organization pockets
Knack Medium Expandable Backpack Unexpanded for day use
Knack Medium Expandable Backpack Simple design with organization pockets
Knack Medium Expandable Backpack Unexpanded for day use in orange
Knack Medium Expandable Backpack Simple design with organization pockets in orange
Knack Medium Expandable Backpack with Separate, patent-pending, expandable packing compartment holds 2 to 3 changes of clothes
Knack Medium Expandable Backpack with Built-in, fleece-lined, protective soft case sunglasses pocket
Knack Medium Expandable Backpack with Hidden, zip-away side water bottle pocket
Spacious main compartment with organization pockets, fleece-lined tablet pocket and key leash
Exterior charger and battery pocket
Easy-access front triangle pocket with business card slots and pen loops
Tuck-away back zip storage pocket for shoulder straps
Padded, side computer pocket fits up to 17" laptops (measured diagonally)
2 interior, see-through, soft monofilament mesh zip organization pockets
Unexpanded and expanded view of medium Knack (Model height: 5' 11").

Medium Expandable Knack Pack®

Regular price $175

At home in the boardroom and on the boardwalk, the Medium Expandable Knack Pack is the perfect One Bag Life™ accessory. Learn More


34 left in stock

 
Free shipping
&
Ships fast
Laptop

Fits 15" Laptop

Overhead

All Jets

Under Seat

All Jets

Outfits

2-3

Not sure what size you need? See comparison and size chart

Key Medium Expandable Backpack Everyday Features

  • Easy-access, padded side-zip computer pocket for 15" laptops
  • Spacious main compartment with organization pockets, fleece-lined tablet pocket and key leash
  • Hidden, zip-away side water bottle pocket

Key Knack Backpack Travel Features

  • Separate, patent-pending, expandable packing compartment holds 2 to 3 changes of clothes 
  • Meets most popular carry-on requirements as well as fits under most seats
  • Packing compartment with easy-access suitcase lid 

Key Medium Pack Technical Features

  • Custom-developed, durable, water-resistant body fabric 
  • Molded, comfort-cool foam back panel
  • YKK™ water-resistant zipper with custom-designed pullers

For orders over 10 or logo'd Knack products, please contact our Corporate Sales department: corporate@knackbags.com

Packing Dimensions
Medium Large
Unexpanded
Medium Knack Backpack Unexpanded 17 Liters
17 Liters
Large Knack Backpack Unexpanded 22 Liters
22 Liters
Expanded
Medium Knack Backpack Expanded 31 Liters
17 L + 14 L = 31 Liters
Large Knack Backpack Expanded 37 Liters
22 L + 15 L = 37 Liters
Additional Specs
Medium Large
Weight Icon
Weight
2 lb 11 oz 3 lb 4 oz
Laptop Icon
Laptop
15" 17"
Plane Overhead Icon
Overhead
All Jets All Jets
Plane Under Seat Icon
Under Seat
All Jets Doesn't fit (when expanded)
Outfits Icon
Outfits
2-3 3-4
Water Bottle Pocket Icon
Water Bottle Pocket
17 oz S'well™ 25 oz S'well™
Tuck-Away Hip Strap Icon
Tuck-Away Hip Strap
No Yes

Size Chart

Model: 5'5"

Knack Backpacks on 5 foot 5 inch model

Medium

Large

Model: 5'11"

Knack Backpacks on 5 foot 11 inch model

Medium

Large

Model: 6'3"

Knack Backpacks on 6 foot 3 inch model

Medium

Large

Product Details

Pack Dimensions (LxWxD):

Expanded: 19"x12"x9.5"

Unexpanded: 19"x12"x4.5"

Volume:

Expanded: 31 Liters

Unexpanded: 17 Liters

Weight: 2 pounds 11 ounces (Just a bit more than 2 Grande Coffees)

Laptop Pocket Dimensions (LxWxD):

Dimensions: 15.5"x11"x2"

Pocket Opening: 15"

Tested to carry loads up to 40 pounds

Fabric: Suiting-inspired, custom-developed, water-resistant 1200 denier two tone polyester body fabric


Lining Fabric: Custom, stain-resistant 150D Nylon lining fabric


Zippers: Water-resistant YKK™ reverse coil zippers


Zipper Pullers: Strong, custom-designed cast zinc zipper pullers with comfortable PU overmold and chip-resistant PVD coating


Hardware: Duraflex™ buckles and sliders


Back Panel Material: Molded, comfort-cool foam back panel

Everyday Features:
  • Spacious main compartment
  • Protective, fleece-lined internal tablet pocket
  • 2 interior, see-through, soft monofilament mesh zip organization pockets
  • Handy interior key leash
  • Built-in, fleece-lined, protective soft case sunglasses pocket
  • Easy-access front triangle pocket with business card slots and pen loops
  • Exterior charger and battery pocket
  • Large zip-away side water bottle pocket holds 17 ounce S'well™/24 ounce Hydro Flask™ bottles
  • Padded, side computer pocket fits up to 15" laptops (measured diagonally)
  • Comfort-foam top carry handle
  • Ergonomically-designed comfort foam shoulder straps with easy-release clips
  • Adjustable sternum strap helps make heavier loads more comfortable
Travel Features:
  • Separate, patent-pending, expandable 14 cubic liter packing compartment with easy-access suitcase lid opening
  • Internal packing compression strap system
  • Large, see-through, soft monofilament mesh zip packing pocket
  • Rain flap covering expansion zipper
  • Tuck-away back zip storage pocket for shoulder straps

How to Live a One Bag Life

GET ORGANIZED

Don’t worry about your backpack being a black hole. We designed pockets, sleeves and clips that help keep your everyday items organized and in place no matter where you go.

STAY FLEXIBLE

Not sure about staying in town after your business trip ends? Unzip, expand and pack our hidden suitcase compartment with a change of clothes and be spontaneous.

BE READY FOR ANYTHING

Inspired by tailored clothing fabrics, our custom-designed, two-toned, water-resistant fabric is as much at home at a meeting with your boss as it is at drinks with your friends.

KEEP CONNECTED

Feel free to carry your laptop day and night. We designed our padded computer pocket to be easily accessible and close to your back for carrying comfort.

WEAR A BACKPACK BUT DON’T LOOK LIKE A HIKER

Our zip-away side water bottle pocket keeps your drink handy and your bag neat.

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 unzip the back pocket, unclip your straps and stow them out of the way.

HAVE FUN

Our custom-designed lining brightens up your day and ensures things never get lost in your bag.

Customer Reviews

Based on 65 reviews
80%
(52)
18%
(12)
2%
(1)
0%
(0)
0%
(0)
B
B.
Best backpack ever!

Seems Very durable feeling, comfortable to wear, and plenty of room for my day to day belongings.

G
G.P.
I'll never roll again

I have used my Knack Medium on 7 trips in the last few months. It's fantastic for overnights or 2 days if you pack carefully and I don't miss having something else to roll. Of course if you don't need to travel with a second pair of shoes it's fantastic, but if you do it's just a little heavier. I finally figured out where all my stuff should go, but that's my problem not theirs (lots of nooks and crannies). I love the water bottle container and the hidden laptop sleeve.

M
M.R.
Highly functional!

Highly functional!

K
K.S.
Best backpack I have ever owned

I love this backpack! I travel 2-3 times per month for work. This pack is comfortable to wear and carries all the things I need. I highly recommend this backpack!

S
S.P.
Most Efficient Backpack Ever!!!!

I take weekend trips a lot and this bag tops all the others I've used. The separate expandable section for clothes is amazing, it allows you to keep everything organized and divided. Once you get to your hotel you can take your clothes out and use the backpack as a day pack... what other bag can you do that with?! Everyone should have this bag if they travel!

Customer Reviews

Based on 65 reviews
80%
(52)
18%
(12)
2%
(1)
0%
(0)
0%
(0)
B
B.
Best backpack ever!

Seems Very durable feeling, comfortable to wear, and plenty of room for my day to day belongings.

G
G.P.
I'll never roll again

I have used my Knack Medium on 7 trips in the last few months. It's fantastic for overnights or 2 days if you pack carefully and I don't miss having something else to roll. Of course if you don't need to travel with a second pair of shoes it's fantastic, but if you do it's just a little heavier. I finally figured out where all my stuff should go, but that's my problem not theirs (lots of nooks and crannies). I love the water bottle container and the hidden laptop sleeve.

M
M.R.
Highly functional!

Highly functional!

K
K.S.
Best backpack I have ever owned

I love this backpack! I travel 2-3 times per month for work. This pack is comfortable to wear and carries all the things I need. I highly recommend this backpack!

S
S.P.
Most Efficient Backpack Ever!!!!

I take weekend trips a lot and this bag tops all the others I've used. The separate expandable section for clothes is amazing, it allows you to keep everything organized and divided. Once you get to your hotel you can take your clothes out and use the backpack as a day pack... what other bag can you do that with?! Everyone should have this bag if they travel!