CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
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CORE Backpack
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CORE Backpack
CORE Backpack
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CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
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CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
CORE Backpack
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CORE Backpack

CORE Backpack

4.8
Rated 4.8 out of 5 stars
4.8 Stars (96 Reviews)
Select Size: Medium - 25L
Select Color: Desert
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  • External weightlifting belt attachment
  • 16” Internal laptop sleeve
  • Sealed internal shoe compartment
  • Dual bottle pockets

Do you even lift? If so, meet your new training partner. Say goodbye to your belt wasting space inside your bag, with this unique and specially designed lifting belt attachment that ensures bag functionality isn’t compromised whatsoever. The CORE Backpack is made for those who train hard and pack smart. 

(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 Backpack is made from:

• 500D nylon body material (PVC backing)

• YKK zippers

• Ripstop nylon lining

• Nylon webbing

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CORE BACKPACK
SIZE COMPARISON
MEDIUM BACKPACK LARGE BACKPACK
Capacity 25 L / 6.6 GAL 33 L / 8.7 GAL
Bag Weight 1 kg / 2.2 lbs 1.1 kg / 2.4 lbs
Height (H) 50.8cm / 20" 53.3cm / 21"
Width (W) 30.5cm / 12" 31cm / 12.2"
Depth (D) 17cm / 6.7" 20.1cm / 7.9"
Shoe Storage Up to size 10 Up to size 13
Laptop Sleeve Up to 16" Up to 16"

Designed for lifters.

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 (25L and 33L) and the layout.

Most of the materials are the same as used in other KNKG 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. The CORE33 (Large) Backpack can fit a belt up to 6.3"/16cm wide. The CORE25 (Medium) Backpack can fit a belt up to 5.9"/15cm wide.

And yes! Lever belts will work with this bag.

The CORE25 (Medium) Backpack fits shoes up to size 10 US mens trainers/runners comfortably. The CORE33 (Large) Backpack fits up to size 13 US mens.

This backpack is designed for serious lifters who crave serious organization.

This gym bag works harder than you do. This is the best and most functional gym bag you can find.

The best gym bag for the active man.

4.8
Rated 4.8 out of 5 stars
Based on 96 reviews
Total 5 star reviews: 82 Total 4 star reviews: 11 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 0
97%would recommend this product
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96 reviews
  • BW
    Brandon W.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding
    Using For: Gym Bag, Every Day Carry, Work
    Rated 5 out of 5 stars
    Fantastic Bag!

    I’ve been looking for awhile for the perfect bag that accommodates what I need to go from office to gym or vice versa. I’ve purchased adidas, Nike, Gymshark and others. Nothing has lived up to what I’ve needed until my KNKG Core bag. I can store all my things AND it conveniently holds my lift belt without sacrificing bag space. It’s the final boss of gym bags.

    Was this helpful?
  • TN
    Tao-Nhan N.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? CrossFit, Olympic Lifting
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Perfect bag for the gym

    Took the smaller version, perfect gym bag.

    Have the bigger version that I will use to travel

    Was this helpful?
  • JD
    John D.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding
    Using For: Gym Bag, Every Day Carry
    Rated 5 out of 5 stars
    If it fits it ships

    This bag will fit anything and everything you need for the gym. Absolutely love it.

    Was this helpful?
  • JB
    Jacob B.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Fight & Combat Sports, Other
    Using For: Gym Bag, Every Day Carry
    Rated 5 out of 5 stars
    Battle rattle

    This isn’t just a backpack—it’s battle armor for your daily grind. The CORE Backpack by KNKG blends sleek, minimalist design with unapologetic durability. Every zipper glides like a sword unsheathing, every compartment feels precision-engineered for efficiency. Whether you’re conquering the commute, hitting the gym, or escaping for the weekend, this pack stays ready, rugged, and relentlessly reliable.

    A carry companion for the bold. 10/10—gear up and go.

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  • EG
    Ethan G.
    Verified Buyer
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding
    Using For: Gym Bag, Sport / Fitness, Every Day Carry, Work
    Rated 5 out of 5 stars
    CORE backpack

    Perfect for the gym perfect for every day use I’m in college student and at the gym goer so I need to carry around my school supplies, my laptop, my electronics, but I also need my gym bag my shoes and the core backpack is everything in one

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