CORE Duffel Waxed Canvas Medium 35L

4.8
Rated 4.8 out of 5 stars
4.8 Stars (995 Reviews)
$270
Traditional Waxed Canvas · Restocking Late Feb 2026
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WOODLAND CAMO WAXED CANVAS 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
0.6 kg / 1.3 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
MEDIUM
35 L / 9.2 GAL
0.8 kg / 1.8 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 13"
6.3" (W) - 45.7" (L)
LARGE
51 L / 13.4 GAL
1 kg / 2.2 lbs
32cm / 12.6"
50.8cm / 20"
32cm / 12.6"
Size 13
Up to 15"
6.7" (W) - 51.5" (L)
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
Laptop Sleeve
Lifting Belt Size
MINI
15 L / 3.96 GAL
0.6 kg / 1.3 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
MEDIUM
35 L / 9.2 GAL
0.8 kg / 1.8 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 13"
6.3" (W) - 45.7" (L)
LARGE
51 L / 13.4 GAL
1 kg / 2.2 lbs
32cm / 12.6"
50.8cm / 20"
32cm / 12.6"
Size 13
Up to 15"
6.7" (W) - 51.5" (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. For a limited time only, each set includes a genuine leather wallet and keyring.

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 995 reviews
Total 5 star reviews: 879 Total 4 star reviews: 91 Total 3 star reviews: 9 Total 2 star reviews: 4 Total 1 star reviews: 12
97%would recommend these products
Slide 1 selected
995 reviews
  • GD
    Gregory D. J.
    Verified Buyer
    Reviewing
    CORE Duffel Large 51L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding, Fight & Combat Sports, Other
    Using For: Gym Bag, Sport / Fitness, Every Day Carry, Work
    Rated 4 out of 5 stars
    Great Quality

    This bag is very sturdy and has more than enough space & pockets for me to stay organized and maneuver with ease. The material is great quality, which is a huge plus.

  • BM
    Brandon M.
    Verified Buyer
    Reviewing
    CORE Duffel Large 51L
    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
    Well Done

    Was looking for a bag that would fit by size 13 brunt work boots. This is the only bag that would fit them that was also well organized. Great product and love the layout and feel. The belt storage is also really cool

  • DM
    David M.
    Verified Buyer
    Reviewing
    CORE Duffel Mini 15L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Functional Circuit Training, Weightlifting
    Using For: Gym Bag, Sport / Fitness, Every Day Carry
    Rated 5 out of 5 stars
    Great bag, incredible value

    I bought the duffel mini, getting turned on to the bag and the company via my membership in the Pump Club. I really dig how the recommendations the PC passes along on everything is rooted in research and proven metrics. Bought the bag as a way to reduce friction to working out — a packed bag is one less reason to talk myself out of a workout.

    This bag has surpassed my expectations. I’m 27 weeks into my association with the Pump Club, so my needs at this point are pretty minimal: shoes, workout clothes, water bottle, and pockets to stash personal items. This bag has it all, thoughtfully designed with top flight, heavy duty material, from the nylon to the strapping to the zippers. I’d highly recommend any KNKG bag to anyone.

  • SN
    Steven N.
    Verified Buyer
    Reviewing
    CORE Duffel Large 51L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, CrossFit
    Using For: Gym Bag, Every Day Carry, Work
    Rated 5 out of 5 stars
    Amazing bag

    I absolutely love this gym bag! It has so much room without feeling bulky, and I can easily fit my shoes, clothes, water bottle, toiletries, and still have space left over. The compartments make it easy to stay organized, and everything has its place.

    It feels sturdy and well-made, and the straps are comfortable even when the bag is full. Perfect for the gym, travel, or even an overnight trip. Highly recommend if you need something spacious and reliable!

  • RL
    Renay l.
    Verified Buyer
    Reviewing
    CORE Duffel Large 51L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, CrossFit, Functional Circuit Training, Olympic Lifting
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Large bag

    This bag is great! I was able to put all my gear and my husbands into the same bag. Two pairs of lifters, both belts, even a double a mat fits, with all the other items with no problem. My last bag got a hole over time but this duffel is so well built, it seems impossible to have that happen again.