Named "Best Gym Bags to Keep Your Training Goals In" by Gear Patrol in 2024.

WE’RE SERIOUS ABOUT OUR GEAR

PACK

Pack all your essentials. Fits gym clothes, supplements, lifting gear, and even your laptop.

LOAD

Designed to take a beating. Load up with confidence thanks to sturdy 500D nylon and heavy duty buckles.

CUSTOMIZE

Customize your internal configuration. Removable dividers allow you to add or remove compartments easily.

PACK
LOAD
CUSTOMIZE
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Secure-zip outer pockets:

Keep snacks, keys, and other small personal items easily accessible.

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All in one place:

External weightlifting belt attachment

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Designated shoe compartment:

Keep sweaty footwear.

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Easy to carry:

Padded straps for comfortable shoulder hold.

Simply Amazing.Eben C.

“The bag is great! Feels well-made and durable. Got the belt to go with it and it fits perfectly without giving up any extra space.”

Extremely durable.Arie K.

The pockets are designed intelligently and make for excellent organization. Works best when you pair with the dividers. Highly recommend this bag!

Even Better than Expected.Karter C.

The bag feels extremely well made. The pockets are well placed and I love the location of the shoe/used gym clothes slot on the side.

Lifetime investment

When it comes to durable, high-quality materials we don’t mess around. The Core Duffel is built to last and follow you on your lifting journey.

4.8
Rated 4.8 out of 5 stars
Based on 624 reviews
Total 5 star reviews: 539 Total 4 star reviews: 74 Total 3 star reviews: 5 Total 2 star reviews: 2 Total 1 star reviews: 4
98%would recommend this product
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624 reviews
  • CD
    Christian D.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding, Other
    Using For: Gym Bag, Sport / Fitness, Every Day Carry
    Rated 5 out of 5 stars
    Blown Away!!!

    13 shoes—a rarity in many duffel bags. This compartment keeps my shoes separate from the rest of my gear, ensuring cleanliness and organization. The bag’s design is both functional and stylish. It includes dual bottle pockets, an internal laptop sleeve suitable for most laptops, and an external weightlifting belt attachment that saves internal space. Moreover, its dimensions make it compliant with most airline carry-on size restrictions, making it perfect for short trips or as an in-flight personal item. Overall, the KNKG Core Duffel combines durability, functionality, and style, making it an excellent investment for anyone on the go.

  • FH
    Fred H.
    Verified Buyer
    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
    perfect gym bagf

    everything i had hoped for.

    a real beauty.

  • KM
    Kenneth M.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Functional Circuit Training, CrossFit, Olympic Lifting, Fight & Combat Sports
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Loving this bag - I finally have all the things with me

    When you work out early in the morning, there's always a change to forget something, but not anymore.

    Not only is the bag well-crafted, it is perfect for all my workout equipment - I have a lifting belt, gloves, boxing gloves, shoes, water bottle, and still feel like I have plenty of room if I need to bring extra clothes or other items.

    I was originally not too sure about the cost, because it's clearly a little more costly than a standard bag, but it was worth every penny and should last me forever.

    I appreciate the quality and the convenience this bag brings me...honestly it makes my mornings so much easier.

  • DA
    Dustin A.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Olympic Lifting, Other
    Using For: Gym Bag, Every Day Carry
    Rated 5 out of 5 stars
    Great, durable bag

    Unlike the average gym bag, this is well made with parts that will hold up to heavy daily use. With plenty of room to fit every essential as well as all the extras. All in a package that will still fit into the average gym locker.

  • BS
    Booker S.
    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
    Just what I needed.

    It's sturdier than what I expected but not heavy. It fits everything I need in it. Wraps, shoes, clothes, bands, ipad, etc. Not gonna lie though, i thought the lifting belt holder was a gimmick but I freaking love it. It fits lever belts so I dont have to carry it on my shoulder. I love the bag and would buy another one if anything ever happened to this one.

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 12 shoes. The CORE51 (Large) will fit size 15 shoes.