CORE Duffel Waxed Canvas Medium 35L

4.8
Rated 4.8 out of 5 stars
4.8 Stars (1,219 Reviews)
$290
Traditional Waxed Canvas · Restocking Late August
Tan Waxed Canvas · Restocking Mid September
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TRADITIONAL WAXED CANVAS GYM DUFFEL

WAXED. WEATHERED. UNCOMPROMISING.

The CORE Duffel 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.
  • 13” 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 Duffel 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 Duffel is made from:
• Water-resistant Scottish waxed canvas from Halley Stevenson (cotton, waxed finish)
• Genuine Cow leather logo patch & zipper pulls
• YKK zippers
• Powder-coated steel buckles
• 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.
CORE DUFFEL
SIZE COMPARISON
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
Laptop Sleeve
Lifting Belt Size
MINI
15 L / 4 GAL
0.9 kg / 2 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
MEDIUM
35 L / 9.2 GAL
1.2 kg / 2.6 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 13"
6.3" (W) - 45.7" (L)
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
Laptop Sleeve
Lifting Belt Size
MINI
15 L / 3.96 GAL
0.9 kg / 2 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
MEDIUM
35 L / 9.2 GAL
1.2 kg / 2.6 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 13"
6.3" (W) - 45.7" (L)

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.

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.

Measure the widest point of your belt and its length. The CORE35 (medium) duffel can fit a belt up to 6.3"/16cm wide and 45.7"/116cm long.

A lever belt can fit, but you should count the lever into your measurement.

The CORE35 (Medium) will fit size 10 shoes.

4.8
Rated 4.8 out of 5 stars
Based on 1,219 reviews
Total 5 star reviews: 1.1k
Total 4 star reviews: 113
Total 3 star reviews: 13
Total 2 star reviews: 5
Total 1 star reviews: 12
98%would recommend these products
Slide 1 selected
1,219 reviews
  • TG
    Tomasa G.
    Verified Buyer
    Reviewing
    CORE PRO Duffel Mini 15L
    I recommend this product
    Rated 5 out of 5 stars
    Will have this

    Great craftsmanship!

  • JP
    Jae P.
    Verified Buyer
    Reviewing
    CORE PRO Duffel Mini 15L
    I recommend this product
    Rated 5 out of 5 stars
    CORE PRO Mini as Shift Duty Bag

    I bought this to replace my kit bag toolbag after two failures: a cheap one that developed holes within two years, and a heavier "sturdy" one that was, well, heavy and couldn't stay organized or upright. When KNKG released the updated CORE PRO, I decided to trial the Mini.

    Two months in, I'm impressed. The form factor is stable even in a moving fire engine; no tipping, no sliding. Organization is excellent, especially with the dividers. I am able to fit my utility and spare structural gloves, hood, high-vis vest, two (2) large pstring clamps, a 3M respirator with spare filters, a Vanquest PPM-Slim 2.0 holding a Leatherman multitool, magic marker, lighter, fasteners and other knick-knacks, a Thyrm CellVault for batteries, a GORUCK GR1 Field Pocket holding a headlamp, a spare Streamlight ProTac 2L flashlight, a MagSafe power bank with cable, all with room to spare.

    The standout feature for me is the patch panel. It holds my helmet identifiers and personnel accountability tags secured but visible and accessible; almost like it was sized specifically for helmet identifiers.

    My one real critique: the handles. They're about an inch too short, which makes the snap closures fiddly and lets the wrap work itself loose, especially when something's hanging off the straps (I run ear muffs off mine). I'd also like to reinforce the bottom with an abrasion-resistant material, since our apparatus cab surfaces are rough. This is an unknown for now, not a knock against the bag.

  • SB
    Shaun B.
    Verified Buyer
    Reviewing
    CORE Duffel Medium 35L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Fight & Combat Sports
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Great bag

    Best gym bag I've purchased worth the money

  • LI
    Lewis I.
    Verified Buyer
    Reviewing
    CORE PRO Duffel Large 51L
    I recommend this product
    Rated 5 out of 5 stars
    Built like a tank

    You can tell immediately that this bag is built to handle heavy use. Every part of it feels durable and well-engineered. The shoe compartment and water bottle holders are super convenient and well-placed. Fits all my training gear for BJJ without feeling cramped and worked great as an organized weekender for a family trip. Worth every penny!

  • L
    Lawrence
    Reviewing
    CORE PRO Duffel Large 51L
    I recommend this product
    Rated 5 out of 5 stars
    5 Stars

    Its perfect but noe i want to purchase rhr dividers to go inside thr bag!