CORE Backpack Waxed Canvas Medium 25L

4.8
Rated 4.8 out of 5 stars
4.8 Stars (293 Reviews)
$290
Limited Edition - Waxed Canvas: Traditional
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TRADITIONAL WAXED CANVAS BACKPACK FOR EVERYDAY CARRY

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.
  • Genuine leather wallet & keyring included - Limited time only.

(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 293 reviews
96%would recommend these products
Slide 1 selected
293 reviews
  • BD
    Bill D.
    Verified Buyer
    Reviewing
    CORE PRO Backpack Mini 13L
    I recommend this product
    Rated 5 out of 5 stars
    Great little personal item pack for traveling with gear

    The combination of a trolley sleeve, easy plane access, and dimensions that work well as a personal item on airlines around the world makes this a great option for carrying gear of all types for vacation travel, especially if you are looking for a small bag with two water bottle pockets. The bag will work great for destination carry for a wide range of items, and because it is self standing with easy access it works great as a car bag, beach bag, or other places you might want to have quick access from the top.

  • EP
    Earvin P.
    Verified Buyer
    Reviewing
    CORE Backpack Waxed Canvas Mini 13L
    I recommend this product
    Rated 5 out of 5 stars
    The perfect compact gym bag

    From the moment this arrived, I knew I was in for a treat. The packing alone showed a high level of care and attention to detail before I even saw the backpack itself. Once unboxed, the quality and construction of the bag absolutely blew me away. The waxed canvas material feels incredibly premium, rugged, and built to last through daily wear and tear.

    I use this for the gym to pack just enough for my essentials. It perfectly holds one pair of shoes, two water bottles, my headphones, keys, a lifting belt, and a small towel. Despite holding all of that, the bag is not heavy at all and feels incredibly sturdy on my back. It’s a great little compact bag.

    I honestly have no idea why I waited so long to purchase one.

    What a bag!

  • JN
    Jennifer N.
    Verified Buyer
    Reviewing
    CORE Backpack Mini 13L
    I recommend this product
    What type of training is your KNKG bag supporting you with? CrossFit
    Using For: Gym Bag
    Rated 5 out of 5 stars
    CORE Mini Backpack

    Perfect size & great quality!

  • SA
    Scott A.
    Verified Buyer
    Reviewing
    CORE PRO Backpack Mini 13L
    I recommend this product
    Rated 5 out of 5 stars
    Best Gym Bag

    KNKG has the best bags. This is my second and I use both for the gym. Durable, and there is a place for everything and easy to find.

  • SR
    Steven R.
    Verified Buyer
    Reviewing
    CORE Backpack Medium 25L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Perfect Gym Bag

    This has become my perfect gym bag. Easily carries whatever I need for that day, even on leg day when I carry my lever belt, knee sleeves, shoes, and more. Enough space and structure in the main compartment and the smaller area are perfect for the other things you need (air pods, lock, keys and wallet, tape). So glad I pulled the trigger on this bag. Worth every penny.