Man wearing desert CORE Duffel over shoulder inside gym
Front view of desert CORE Duffel sitting on wooden box
Desert CORE Duffel with matching lifting belt sitting on wooden box
Desert CORE Duffel side profile
360* view of CORE desert Duffel
Flat lay of desert CORE Duffel
Birds eye view of empty desert CORE Duffel, showing internal pockets and laptop sleeve
Internal divider organization system packed inside of desert CORE Duffel
Birds eye view of desert CORE Duffel packed with hoodie, skipping rope, wrist wraps, socks and laptop
NOBULL sneakers packed inside desert CORE Duffel shoe compartment
Shaker bottle inside desert CORE duffel bottle pocket
Close up of KNKG zippers and metal buckles on desert CORE Duffel
Athlete wearing desert CORE Duffel over shoulder
Side by side of man and woman wearing medium CORE Duffel
Medium and large CORE Duffel stacked on top of each other, showing size difference
Side by side of large and medium CORE Duffel showing size difference

CORE Duffel Medium 35L

4.8
Rated 4.8 out of 5 stars
4.8 Stars (752 Reviews)
$152.96 $169.95
Size: Medium 35L
Mini 15L
Mini 15L
Medium 35L
Medium 35L
Large 51L
Large 51L
Color: Desert
Black
Black
Natty
Natty
Green
Green
Desert
Desert
Limited Edition - Waxed Canvas:
Camo
Camo
Traditional
Traditional
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Duffel Divider
Duffel Divider
$39.95 $49.95
Lifting Belt
Lifting Belt
$39.95 $59.95
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PACKING A LIFTING BELT? THIS IS THE DUFFEL FOR YOU

  • External weightlifting belt attachment
  • 13/15” Internal laptop sleeve
  • Sealed internal shoe compartment
  • Dual bottle pockets 

Do you even lift? If so, meet your new favorite lifting partner. Say goodbye to your belt taking up precious space in your bag, with this unique and specially designed lifting belt attachment that ensures functionality isn’t compromised whatsoever. The CORE Duffel is made to store everything you need and support you every time you step into the gym.

(Lifting belt sold separately)

Covered by our promise to be free of defects in material or workmanship within its practical lifetime. If there is a defect in materials or workmanship KNKG will repair or replace your bag, including free shipping.

Our bags are meticulously designed to stand up to the test of time. We utilize durable materials, coupled with top-notch craftsmanship and rigorous testing, resulting in the toughest bags in the game. You can confidently pack your bag to its maximum capacity without worrying about it stretching or tearing.

The CORE Duffel is made from:

  • 500D nylon body material (PVC backing)
  • YKK zippers
  • Powder-coated steel buckles
  • Ripstop nylon lining
  • Nylon webbing
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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)

Workouts are tough but these bags are tougher. Effortless to carry and palpably robust. This thing does it all and measures in at the perfect size.

Designed for serious lifters who crave serious organization.

This is the best gym bag for powerlifters. Many amazing features that set this bag apart from its rivals. The outer material is tough, durable, and lightweight while also being water resistant and easy to clean.

FAQS

The main difference is the unique weightlifting belt attachment. This feature allows the bag be used as normal, while carrying a cumbersome lifting belt on the outside. Other changes are the volume (35L) and the layout.

Most of the materials are the same as used in other KNKG bags. YKK zippers, heavy duty buckles, nylon lining and webbing are all the same. In the CORE range, we have gone for a lighter 500D nylon outside and a new velcro logo feature that allows you to go 'incognito' with your own patches.

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.
The CORE51 (large) duffel can fit a belt up to 6.7"/17cm 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. The CORE51 (Large) will fit size 13 shoes. Larger shoe sizes will fit our PLUS Duffel.
4.8
Rated 4.8 out of 5 stars
Based on 752 reviews
Total 5 star reviews: 650 Total 4 star reviews: 81 Total 3 star reviews: 7 Total 2 star reviews: 3 Total 1 star reviews: 11
97%would recommend these products
Slide 1 selected
752 reviews
  • JG
    Jesse G.
    Verified Buyer
    Reviewing
    CORE Duffel Waxed Canvas Medium 35L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding
    Using For: Sport / Fitness, Gym Bag
    Rated 5 out of 5 stars
    Quality bag

    Lots of pockets and hold a lot of things!

    Was this helpful?
  • NA
    Nick A.
    Verified Buyer
    Reviewing
    CORE Duffel Waxed Canvas Medium 35L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Fight & Combat Sports
    Using For: Every Day Carry
    Rated 5 out of 5 stars
    Waxed is great quality!

    The waxed duffle is great - very durable and stylish. Matches my Barbour coat well for the English Countryside look!

    Was this helpful?
  • J
    Jose
    Reviewing
    CORE Duffel Mini 15L
    I recommend this product
    Rated 5 out of 5 stars
    5 Stars

    Second bag order my girlfriend like mine, and I had to get her one as well

    Was this helpful?
  • J
    Jose
    Reviewing
    CORE Duffel Mini 15L
    I recommend this product
    Rated 5 out of 5 stars
    5 Stars

    Best minibag ever convenience to take around and not carry something too big well-made I carried this every day

    Was this helpful?
  • AH
    Aaron H.
    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
    Using For: Sport / Fitness
    Rated 5 out of 5 stars
    Great Bag

    Use it for a quick workout bag where I keep a t-shirt and a pair of shorts. The quality is great and led me to purchase a bigger bag as my primary workout bag.

    Was this helpful?
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