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 809 reviews
Total 5 star reviews: 706 Total 4 star reviews: 81 Total 3 star reviews: 8 Total 2 star reviews: 3 Total 1 star reviews: 11
97%would recommend these products
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809 reviews
  • CH
    Corrinne H.
    Verified Buyer
    Reviewing
    CORE Duffel Mini 15L
    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
    Seriously Great Bag!

    I was finding that given how busy the gym could be I would occasionally need to swap exercises based on availability. This meant having other option on me such as straps or wrist wraps key when this occurred. So I really needed something small but with a lot of pockets to make finding wrist wraps, gloves, sleeves, cuffs etc handy. The Core Mini is exactly what I needed. I also use it on the go for an extra change of clothes when I hit the sauna or am just taking a day trip but don't need a backpack.

  • J
    JMJ
    Reviewing
    CORE Duffel Medium 35L
    I recommend this product
    Rated 5 out of 5 stars
    5 Stars

    the best

  • PG
    Patrick G.
    Verified Buyer
    Reviewing
    CORE Duffel Mini 15L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Functional Circuit Training
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Perfect bag for most of my workouts

    I had been looking around for a small duffel for the gym for the last couple of months and I randomly decided to look here again. I already own a King Kong duffel that I really liked but didn't need so much room anymore so when I found there was a 15L duffel from them I jumped on it immediately. It has just the right amount of space for what I need for 90% of my workouts (I only use my other one on days I do heavy cardio and need extra clothes) and is small enough to easily carry around with me in the gym. The zippers are really nice and I love all the compartments. I only wish there was a bottle sleeve on the outside because I'm worried about it exploding inside the main compartment, but otherwise the bag is perfect.

  • LT
    Lawrence T.
    Verified Buyer
    Reviewing
    CORE Duffel Medium 35L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, CrossFit
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    Love this bag

    Well designed, thought of everything, the last gym bag you’ll purchase.

  • KW
    Kyle W.
    Verified Buyer
    Reviewing
    CORE Duffel Large 51L
    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
    Overdue

    I should have purchased this bag a long time ago. I have been going to a gym and competitions for many years and never spent the money for a nice gym bag. Instead, I suffered through losing equipment or not able to find it when I needed it. This bag is compact, sturdy, organized and I will never need to replace it due to its high quality. Highly recommend! I got the organizer too and have it organized with neoprene and towels in large compartment; grips, straps, wraps and headbands in middle; jump ropes and a clean set of clothes in last compartment. It also hold my size 12 lifters neatly while standing tall.

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.