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 373 reviews
Total 5 star reviews: 312Total 4 star reviews: 52Total 3 star reviews: 3Total 2 star reviews: 2Total 1 star reviews: 4
98%would recommend this product
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373 reviews
  • B
    Brett
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 Stars

    Best duffel / gym bag around. Good amount of compartments. Great for organizing. Tough high quality materials

  • RP
    Rodney P.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    Beet gym bag I’ve owned!

    I love this bag! Had a pocket for all my gym accessories and more!

  • M
    Matt
    Flag of United States
    I recommend this product
    Rated 4 out of 5 stars
    Love It, But Made Some Tweaks

    Got the 35L for Christmas and have been using it 3/week as my gymbag for 2 months now.

    Pros:

    -Overall the construction and material are very good.

    -The organization of the bag is incredible.

    -Everything feels 'easy access.' I never feel like I'm digging for my wrist wraps or wasting time.

    -The belt storage is a great idea. Shows off my powerlifting belt nicely and keeps it secure.

    -The 35L model is the perfect size to hold everything I need to workout, plus extra clothes and toiletries as well.

    Tweaks (I don't have any major cons so this section is tweaks)

    -The shoulder strap squeaks when you walk with it. I found putting tape of the strap anchor points and using rubber bands as makeshift O-rings in the swivel joint silenced that.

    -The belt holding straps on the side have velcro on the inside to keep them from flopping around when not in use. The velcro does seem to fray my belt a little when getting it in or out; mainly at the bottom. I put tape down there to keep the velcro from eating at my belt and it seems to work.

    Overall I'd recommend this bag, although one or two tweaks would make it amazing.

  • A
    Anthony
    I recommend this product
    Rated 4 out of 5 stars
    4 Stars

    Love this bag!!! I had a medium size Nike duffel at one point. As my gym sessions increase that’s when I knew it was time to upgrade. So much room for everything you need and then some. Only thing that does bother me with the bag if it wasn’t for this it would be 5 stars. Maybe it’s just me, side zippers run in to the shoulder strap clips on the top side of the bag. When I go to zip a side pocket it runs in to those clips. Not a deal breaker still a great bag would recommend to anybody for sure 4.5⭐️⭐️⭐️⭐️✨

  • P
    Paul
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    All around a great bag, few flaws imo.

    All in all, I feel like this is a great bag, though I've only been using it for a couple weeks. From what I've experienced, I would recommend this bag to most people. I like that it's a bit more rigid, the fabric is thick enough that it doesn't collapse on itself. Pockets are well placed, I like a lot of the features, and I have no regrets about the purchase.

    The two complaints/considerations I have are that the zippers are lighter grade than what I feel the rest of the bag is. When I'm tugging on them, it feels like they might be the first thing to go on the bag. Especially on the side pockets, I would love more burley zippers. Secondly, I feel like it should note on the product information portion that the shoe pocket doesn't fit size 13 or larger. This isn't a big deal, as I've always thrown my shoes in the main compartment, however I feel like it would be nice of the company to disclose that so that people know. That being said, it's still a nice side pocket for other things, like a damp bathing suit after swimming.

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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.