CORE Duffel
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CORE Duffel

CORE Duffel

Designed for weightlifters. Made for maxing.

4.8
Rated 4.8 out of 5 stars
4.8 Stars (458 Reviews)
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Duffel Divider
Duffel Divider
$39.95 $49.95
Lifting Belt
Lifting Belt
$39.95 $59.95
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Free, no-questions asked returnsMilitary & Emergency discount2-day shipping available (US only)FREE US SHIPPING OVER $149
  • 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

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 King Kong 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.

SPECS

CORE Duffel
CORE Duffel
From $159.95
Designed For
Your gym session
Dimensions
Height 28cm / 11”
Width 45cm / 18”
Depth 28cm / 11”
Capacity
35 L / 9.2 GAL
Weight
0.8 kg / 1.8 lb
Shoe Compartment
x1 pair
No. of pockets
x4 external
x2 internal
Laptop Sleeve
13 inch
Bottle Pockets
x2 external
"We believe in packing for greatness with gear that's as tough as you are, and can withstand even your toughest workouts. Each KNKG bag is made with the most durable materials and construction techniques to ensure it'll stand the test of time. Every element, from compartments and zippers to pockets and buckles, is tested for durability and efficiency, so you can trust that you are prepared to handle any challenge."

WHY KNKG?

WHY KING KONG?

"Our goal is to make bags that not only address everyday carry needs, but also enhance the way we train, explore, and push ourselves to the limit. We believe in packing for greatness with gear that is as tough as you are, and can withstand even your toughest workouts. Each King Kong bag is made with the most durable materials and construction techniques to ensure it can stand the test of time. Every element, from compartments and zippers to pockets and buckles, is tested for durability and efficiency, so you can trust that you are prepared to handle any challenge."

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 458 reviews
Total 5 star reviews: 391 Total 4 star reviews: 57 Total 3 star reviews: 4 Total 2 star reviews: 2 Total 1 star reviews: 4
98%would recommend this product
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458 reviews
  • CH
    Chad H.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Review

    Functional and stylish

    Was this helpful?
  • DH
    Daniel H.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Bodybuilding
    Using For: Work, Every Day Carry, Gym Bag
    Rated 5 out of 5 stars
    Best Bag Ever (Peace Sign )

    When it comes to choosing a gym bag, there are a lot of factors to consider: durability, organization, comfort, and style. After using the Core Duffle Bag for the past few weeks, I can confidently say it checks off all of these boxes and more!

    Design and Durability: This duffle bag is sleek and stylish with a modern look, and it feels like it is made from high-quality fabric that feels incredibly sturdy. I’ve used LOTS and it’s held up perfectly, showing no signs of wear and tear. The zippers are smooth, and the stitching is strong, ensuring that this bag is built to last.

    Size and Storage: The bag offers the perfect balance of spaciousness and compactness. It fits everything I need for a solid workout: a change of clothes, shoes, towels, water bottle, and even my headphones and personal care products. There’s a separate shoe compartment that keeps my shoes from touching the rest of my gear—an absolute game-changer. I also love the easy-access side pockets for small essentials like my keys and phone, and the interior zip pocket is perfect for securing valuables.

    Comfort: Carrying this bag is a breeze thanks to the adjustable, padded shoulder strap and the reinforced handles. Whether I’m walking from the parking lot or rushing to an appointment, the bag sits comfortably on my shoulder or can be carried by hand without causing any strain. The material is soft yet strong, ensuring it doesn’t dig into my skin.

    Functionality: What really sets the Core Duffle apart from others…

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  • D
    Dillon
    I recommend this product
    Rated 5 out of 5 stars
    5 Stars

    I go to the gym every day and this duffel is an absolute game changer! Thoughtful design with tons of space. I strongly recommend adding the divider to maximize organization. The Med size is perfect for moving around with you in the gym without being bulky and annoying to others.

    Quality material, great organization, worth the investment!

    Was this helpful?
  • RM
    Rene M.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Functional Circuit Training, Fight & Combat Sports
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    Best Christmas present for my son.

    I've had my bag for years and just wanted to pass a great quality bag with enough room for any gym rat, to my son. You won't be disappointed.

    Was this helpful?
  • JH
    Jesse H.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, CrossFit, Functional Circuit Training
    Using For: Gym Bag, Every Day Carry, Sport / Fitness
    Rated 5 out of 5 stars
    Great bag

    Just the right size, the large would be just too big for my personal taste and usage. Love all the storage and pockets. The cup holders are a fantastic addition I didn't think I would use them so much. There are just so many small things whose addition just make this bag great

    Was this helpful?
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