CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L
CORE Backpack Waxed Canvas Medium 25L

CORE Backpack Waxed Canvas Medium 25L

4.8
Rated 4.8 out of 5 stars
4.8 Stars (285 Reviews)
$290
Size: Medium 25L
Mini 13L
Mini 13L
Medium 25L
Medium 25L
Color:
Black
Natty
Limited Edition - Waxed Canvas: Tan
Tan
Black
Traditional
Camo
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Matching Lifting Belt
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WAXED CANVAS BACKPACK. BUILT FOR TRAINING. BUILT TO LAST.

WAXED. WEATHERED. UNCOMPROMISING.

The CORE Backpack is built tough - with a water-resistant waxed canvas exterior inspired by the rugged, resilient spirit of the West. Over time, waxed canvas develops a vintage look, picking up the marks of your journey and building character with every use.

The unique external belt attachment keeps your lifting belt secure on the outside, freeing up valuable space inside the bag. With smart storage throughout, it’s made to back you through training, travel, and everything in between.

Featuring:

  • Water-resistant Scottish waxed canvas from Halley Stevenson.
  • Genuine Cow leather logo patch and zipper pulls.
  • External weightlifting belt attachment.
  • 16” internal laptop sleeve.
  • Sealed internal shoe compartment.
  • Dual bottle pockets. 
  • Packed in a sturdy keepsake box - perfect for gifting.

(Lifting belt sold separately)

Covered by our guarantee to be free of defects in material or workmanship. If there is a defect in materials or workmanship KNKG will repair or replace your bag.

KNKG bags are built to go the distance. Every piece is engineered with quality materials, precision craftsmanship, and real-world testing - so you can pack it to the brim without worrying about rips or failure.

This version of the CORE Backpack features a waxed canvas body - an ultra-durable cotton canvas impregnated with wax for water resistance. Waxed canvas develops a rugged, lived-in look over time, with marks and creases that add to its character. It delivers the same proven longevity as our ballistic materials, with a vintage feel that gets better the harder you use it.

This CORE backpack is made from:
• Water-resistant Scottish waxed canvas from Halley Stevenson (cotton, waxed finish)
• Genuine Cow leather logo patch & zipper pulls
• YKK zippers
• Ripstop nylon lining
• Nylon webbing

​

NOT JUST DURABLE - DEPENDABLE

Built with a water-resistant waxed canvas shell, this limited edition CORE Duffel is crafted for those who aren't afraid to roll up their sleeves and get the work done. Every crease, mark, and scuff tells the story of work put in and limits pushed. No shortcuts. No excuses. Just a bag that shows up like you do.

BUILT TO GO THE DISTANCE

Waxed canvas isn’t just for looks. It’s a proven material trusted for over a century. Water-resistant, tough by nature, and built to age with character. This isn’t a trend piece. It’s a workhorse built for the grind.
CORE BACKPACK
SIZE COMPARISON
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
Laptop Sleeve
MINI
13 L / 3.4 GAL
0.8 kg / 1.8 lbs
35cm / 13.8"
25cm / 9.8"
15cm / 5.9"
Not recommended
iPad
MEDIUM
25 L / 6.6 GAL
1.1 kg / 2.4 lbs
50.8cm / 20"
30.5cm / 12"
17cm / 6.7"
Up to size 10
Up to 16"
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
Laptop Sleeve
MINI
13 L / 3.4 GAL
0.8 kg / 1.8 lbs
35cm / 13.8"
25cm / 9.8"
15cm / 5.9"
Not recommended
iPad
MEDIUM
25 L / 6.6 GAL
1.1 kg / 2.4 lbs
50.8cm / 20"
30.5cm / 12"
17cm / 6.7"
Up to size 10
Up to 16"
PACKAGED WITH PURPOSE
This isn't your average unboxing. Our limited edition Waxed Canvas Collection comes packaged in a premium keepsake box — making it the perfect gift or collector’s piece.

FAQS

The main difference is the unique external weightlifting belt attachment - letting you carry your belt on the outside without sacrificing internal space. This version also features a 35L capacity and a reworked layout for streamlined storage. It's built from waxed canvas, a water-resistant cotton material that develops a rugged, vintage look with use - making it as tough as it is timeless.

This version of the CORE Backpack features a waxed canvas body - an ultra-durable cotton canvas impregnated with wax for water resistance. Waxed canvas develops a rugged, lived-in look over time, with marks and creases that add to its character. It delivers the same proven longevity as our ballistic materials, with a vintage feel that gets better the harder you use it.

Measure the widest point of your belt. The CORE25 (Medium) Backpack can fit a belt up to 5.9"/15cm wide.

And yes! Lever belts will work with this bag.

The CORE25 (Medium) Backpack fits shoes up to size 10 US mens trainers/runners comfortably.

4.8
Rated 4.8 out of 5 stars
Based on 285 reviews
96%would recommend these products
Slide 1 selected
285 reviews
  • ML
    Michael L.
    Verified Buyer
    Reviewing
    CORE PRO Backpack Large 33L
    I recommend this product
    Rated 5 out of 5 stars
    Best Bag !!

    Over the years I’ve destroyed countless bags, I just couldn’t find a sturdy durable bag , but when I got my first KNKG bag I knew I found the right company for me. I was so impressed with the quality and durability that I’ve since purchased 3 bags and I just purchased my 4th, the Apex due to arrive this week. I don’t just use the bags for the gym I also us them for work and travel. When I find a brand I like I stick with it, you have a customer for life!!

    Was this helpful?
  • RB
    Russell B.
    Verified Buyer
    Reviewing
    CORE PRO Backpack Large 33L
    I recommend this product
    Rated 5 out of 5 stars
    Great Backpack

    One of my favorite things about the Core Pro is the belt loop. Also the shoe compartment at the bottom as well.

    Was this helpful?
  • MM
    mia m.
    Verified Buyer
    Reviewing
    CORE PRO Backpack Medium 25L
    I recommend this product
    Rated 5 out of 5 stars
    10/10!!!

    Purchased as a gift for my boyfriend! He has never heard of this brand prior. He’s now OBSESSED!!

    Was this helpful?
  • MM
    Matthew M.
    Verified Buyer
    Reviewing
    CORE Backpack Waxed Canvas Medium 25L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting
    Using For: Every Day Carry
    Rated 4 out of 5 stars
    Great backpack!

    Love my new backpack. The only reason I'll give 4 stars instead of 5 is due to one of the leather pull tabs coming off of the bottom shoe compartment of the bag sometime the first week I had it. I found it in the back floorboard of my truck and was able to reattach it. Other than that, very happy!

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  • N
    Nick
    Reviewing
    CORE Backpack Medium 25L
    I recommend this product
    Rated 4 out of 5 stars
    4 Stars

    Nice bag, however the straps could be more comfortable and allow a size 13 shoe to fit in the shoe compartment

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