CORE Duffel Mini 15L
KNKG mini black CORE Duffel being worn over shoulder
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KNKG mini black CORE Duffel sitting on wooden box in gym
Lifting belt compartment on KNKG mini black CORE Duffel
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Mini size duffel being worn by male and female athlete in gym
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Man wearing KNKG mini black CORE Duffel over his shoulder
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CORE Duffel Mini 15L

4.8
Rated 4.8 out of 5 stars
4.8 Stars (1,126 Reviews)
$100 $110
Size: Mini 15L
Mini 15L
Mini 15L
Medium 35L
Medium 35L
Large 51L
Large 51L
Color: Black
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THE TOUGHEST COMPACT GYM DUFFEL YOU'LL EVER MEET

Built for packing light. Our best selling CORE bags - compact in size yet loaded with function. 

The perfect gym floor bag without the bulk. Designed with a dedicated lifting belt sleeve, drink bottle holder, and multiple secure compartments.

Covered by our guarantee to be free of defects in material or workmanship. If there is a defect in materials or workmanship KNKG will repair or replace your bag.

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
• Ripstop nylon lining
• Nylon webbing

​
CORE DUFFEL
SIZE COMPARISON
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
Laptop Sleeve
Lifting Belt Size
MINI
15 L / 4 GAL
0.6 kg / 1.3 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
MEDIUM
35 L / 9.2 GAL
0.8 kg / 1.8 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 13"
6.3" (W) - 45.7" (L)
LARGE
51 L / 13.4 GAL
1 kg / 2.2 lbs
32cm / 12.6"
50.8cm / 20"
32cm / 12.6"
Size 13
Up to 15"
6.7" (W) - 51.5" (L)
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
Laptop Sleeve
Lifting Belt Size
MINI
15 L / 3.96 GAL
0.6 kg / 1.3 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
MEDIUM
35 L / 9.2 GAL
0.8 kg / 1.8 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 13"
6.3" (W) - 45.7" (L)
LARGE
51 L / 13.4 GAL
1 kg / 2.2 lbs
32cm / 12.6"
50.8cm / 20"
32cm / 12.6"
Size 13
Up to 15"
6.7" (W) - 51.5" (L)

SAME STRENGTH, SAME FUNCTIONALITY, NEW COMPACT SIZE

Built for packing light - without sacrificing our signature external weightlifting belt attachment.

FAQS

The CORE Mini Duffel is specifically designed to fit the KNKG weight belt. We don’t recommend using it with other belt brands. If you’re using a different belt, we suggest upsizing to the MEDIUM or LARGE CORE Duffel instead.

No - we don't recommend the mini size for shoe storage. If you're packing shoes we recommend checking out the medium or large size duffel.
4.8
Rated 4.8 out of 5 stars
Based on 1,126 reviews
Total 5 star reviews: 996 Total 4 star reviews: 102 Total 3 star reviews: 12 Total 2 star reviews: 4 Total 1 star reviews: 12
98%would recommend these products
Slide 1 selected
1,126 reviews
  • AC
    Andrew C.
    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, Bodybuilding, CrossFit
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    Far-and-Away...The Best

    The CORE Duffel Mini 15L is far-and-away the best gym duffel I can imagine. I've had all sorts over the years, from free, to cheap, middle-of-the-road, and premium. This one hits all the marks. It is extremely well designed, very robust, and the perfect size. I also added the dividers to help me organize my bands, straps, and other gear. Bonus: the dividers provide additional robustness to the bag too. I desired (needed) a gym bad that holds everything I need, that's well laid out, and is not a big floppy deal that gets in everyone's way. THIS ONE IS A WINNER!

    Was this helpful?
  • EL
    Eric L.
    Verified Buyer
    Reviewing
    CORE Duffel Medium 35L
    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
    Great Bag for the Gym and Beyond!!

    This duffel feels very well made with quality materials. The cloth is thick and sturdy, zippers and pulls operate smoothly. My shoes(9.5W) fit in the shoe pocket with little room to spare, so I'd say the size 10 max is pretty accurate for the 35L version. I typically carry shoes, socks, shorts, a t-shirt, and a few small accessories and I have tons of room to spare inside. It barely fits in the small lockers at my gym, a bigger size definitely wouldn't fit. There are lots of stash pockets on the inside and outside that are great for those smaller items that you don't want banging around the cavernous interior like earbuds, keys, etc. It's also great to use instead of a suitcase or backpack as an overnight bag, especially if you get the optional dividers. Those really help take the organization to another level. I purchased on sale and was still able to use the military discount. Thanks for that! It is a bit on the higher end price-wise, but I don't think I'll ever need to buy another gym bag. I highly recommend to anyone looking to upgrade their current gym bag!

    Was this helpful?
  • SD
    Sarena D.
    Verified Buyer
    Reviewing
    CORE Duffel Medium 35L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    THE BEST GYM BAG

    Literally the best gym bag I’ve ever owned and you absolutely HAVE to buy the dividers. Everything is now so organized and I don’t have to dig through my bag to find anything anymore. It’s also the perfect size! Thank you for making such an awesome, good looking bag!!

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  • CC
    Craft C. L.
    Verified Buyer
    Reviewing
    CORE Duffel Medium 35L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting
    Using For: Gym Bag
    Rated 4 out of 5 stars
    Smaller than expected, but ideal

    When I opened the box in which this bag came in, I noticed that it said “KNKG Small” on the bottom, in which I panicked cause I ordered the medium. I looked at my bag and the pictures online and was nervous that I had to return or exchange it mostly because I hate the hassle, but as I looked further at the bag it said the medium like it promised! It has great structure and plenty of compartments. This bag came highly recommended on Reddit, happy with the purchase but would’ve went for the larger bag now knowing what I know

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  • GJ
    Greg J.
    Verified Buyer
    Reviewing
    CORE Duffel Mini 15L
    I recommend this product
    What type of training is your KNKG bag supporting you with? None - I don't use my bag for training
    Using For: Work
    Rated 5 out of 5 stars
    Great Duffel

    Overall a great duffel! I got it to use as a daily bag for work instead of a messenger bag. It works fairly well for this purpose, plenty of room for everything except a laptop.

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