CORE Duffel

Designed for weightlifters. Made for maxing.

4.8
Rated 4.8 out of 5 stars
4.8 Stars (534 Reviews)
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  • 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. This beefed up 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

CORE DUFFEL
SIZE COMPARISON

SMALL DUFFEL

LARGE DUFFEL

CAPACITY

35 L / 9.2 GAL

51 L / 13.4 GAL

BAG WEIGHT

0.8 kg / 1.8 lbs

1 kg / 2.2 lbs

HEIGHT (H)

27.9cm / 11"

32cm / 12.6"

WIDTH (W)

45.7cm / 18"

50.8cm / 20"

DEPTH (D)

45.7cm / 11"

32cm / 12.6"

SHOE STORAGE

Size 10

Size 13

LAPTOP SLEEVE

Up to 13"

Up to 15"

LIFTING BELT SIZE

6.3" (W) - 45.7" (L)

6.7" (W) - 51.5" (L)

Designed for weightlifting.

With max support comes max gains.

Get the support you need, every time you step into the gym. With the unique external weightlifting belt attachment, you'll never have to waste space inside your gym bag again.

Made for maxing.

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.

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.

4.8
Rated 4.8 out of 5 stars
Based on 534 reviews
Total 5 star reviews: 461 Total 4 star reviews: 63 Total 3 star reviews: 4 Total 2 star reviews: 2 Total 1 star reviews: 4
98%would recommend this product
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534 reviews
  • CA
    Chelsea A C.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Other
    Using For: Gym Bag, Work, Sport / Fitness
    Rated 5 out of 5 stars
    Best Duffel Ever!

    I cannot explain how much I love this bag. It is lightweight but also incredible in quality. From the zippers and stitching to the stretch of the elastic in the pockets, it’s by far the best bag in my thirty four years of life that I have owned. It has plenty of pocket space and fits my workout clothes, shoes,

    Toiletries, and a hoodie with plenty of space to spare. If you were thinking of getting one, just get it! It’s absolutely worth the investment.

  • GA
    Gabriel A.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Fight & Combat Sports, Other
    Using For: Gym Bag, Sport / Fitness, Work, Every Day Carry
    Rated 5 out of 5 stars
    Great Bag!

    I spent a long time trying to figure out what new gym bag to buy. As a personal trainer I needed a bag that would hold my gym gear and computer with extra storage. On the other side I run 100 mile ultra marathons, so I need something that would also be at home being used in the woods as a drop bag. Bag is well made and I'm so glad I picked it.

  • KB
    Kevin B.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Functional Circuit Training, CrossFit
    Using For: Sport / Fitness, Gym Bag, Every Day Carry
    Rated 5 out of 5 stars
    Holy hugeness Batman!

    I bought this duffle bag for my wife so she could tote around all her Crossfit gear, little did I know when I bought it you could fit an entire Crossfit Gym inside of it! She has literally purchased more gear just to fill the inside of this bag and when she gets tired she just curls up inside for a nice relaxing nap. To say this bag is huge would be a gross understatement. If you need a bag to carry your entire life in that will withstand any amount of weight you throw into it then this is the bag for you. Your back will break before this bag will!

  • RO
    Ryan O.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, CrossFit, Olympic Lifting
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    Perfect Gym Bag

    Exactly as expected

  • SF
    Steven F.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Other
    Using For: Sport / Fitness
    Rated 5 out of 5 stars
    Sundance1227

    Perfect Pickleball bag

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