CORE PRO Duffel Mini 15L

4.8
Rated 4.8 out of 5 stars
4.8 Stars (1,175 Reviews)
$140
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THE NEXT EVOLUTION OF OUR BEST-SELLING MINI GYM DUFFEL

OUR BEST SELLERS, BUILT TOUGHER

Built for packing light, the CORE PRO Mini Duffel is compact in size but loaded with hard-working features.

Purpose built for weightlifters. Carry your belt without sacrificing bag space. The dedicated external sleeve keeps it housed securely, while magnetic webbing straps snap into place to lock it down. The CORE PRO Mini Duffel features a large velcro patch panel for personalization, drink bottle holder, secure quick-access pockets and our most heavy-duty shoulder strap to date.

KEY FEATURES:

  • Compact 15L size: 23cm H x 38cm W x 18cm D / 9.1" H x 15" W x 7.1" D
  • Lightweight build at 1.2kg / 2.6 lbs
  • Designed for accessories, wraps, straps, towel, water bottle and small essentials
  • Dedicated lifting belt sleeve designed to fit the KNKG Lifting Belt only
  • iPad sleeve for work, travel or everyday use
  • Velcro pannel for patch personalization

Add optional dividers and a lifting belt to build your setup your way.*

*Dividers and lifting belt sold separately.

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 PRO Duffel is made from:

• 500D nylon body material (PVC backing).
• Magnetic snap closure on belt sleeve.
• Heavy duty YKK zippers.
• Powder-coated steel buckles and hardware.
• Ripstop nylon internal lining.
• Reinforced nylon webbing straps and handles.
• Velcro patch attachment panel.

CORE PRO Duffel dedicated lifting belt sleeve
BUILT-IN BELT STORAGE

THE CORE DIFFERENCE

Your lifting belt has its own place.

The CORE PRO Duffel is built with a dedicated external lifting belt sleeve, so your belt stays secure, accessible and out of the main compartment.

01

Carry it hands-free

No more carrying your belt separately or forcing it inside your bag.

02

Save internal space

Keep more room inside for shoes, clothes, towels, bottles and daily gym gear.

03

Locked in place

Magnetic snaps secure the belt sleeve faster, cleaner and more securely.

CORE PRO — NEXT EVOLUTION

Upgraded where it counts

Same proven CORE function. Now upgraded with smarter belt storage and more ways to make it yours.

CORE PRO magnetic belt sleeve detail
01

Magnetic Belt Sleeve

Upgraded from velcro to magnetic snaps for faster, cleaner and more secure belt storage.

CORE PRO large velcro patch panel
02

Large Velcro Patch Panel

Built for added customization. Attach your favourite patches and make your CORE PRO setup your own.

CORE PRO heavy-duty shoulder strap
03

Heavy-Duty Shoulder Strap

Our most heavy-duty shoulder strap to date, made with a stronger build, padded support and a more secure carry feel.

CORE PRO custom hardware and reinforced webbing
04

Custom Hardware & Reinforced Webbing

Finished with custom hardware and double-reinforced webbing in high-stress areas for a tougher, more dependable build.

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
1.2 kg / 2.6 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
SMALL
25 L / 6.6 GAL
1.4 kg / 3.1 lbs
25cm / 9.8"
40cm / 15.7"
25cm / 9.8"
Size 10
Up to 14"
4.5" (W) - 45" (L)
MEDIUM
35 L / 9.2 GAL
1.6 kg / 3.5 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 16"
6.3" (W) - 45.7" (L)
LARGE
51 L / 13.4 GAL
1.8 kg / 4.0 lbs
32cm / 12.6"
50.8cm / 20"
32cm / 12.6"
Size 13
Up to 16"
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 / 4 GAL
1.2 kg / 2.6 lbs
23cm / 9.1"
38cm / 15"
18cm / 7.1"
Not recommended
iPad
KNKG Belt
SMALL
25 L / 6.6 GAL
1.4 kg / 3.1 lbs
25cm / 9.8"
40cm / 15.7"
25cm / 9.8"
Size 10
Up to 14"
4.5" (W) - 45" (L)
MEDIUM
35 L / 9.2 GAL
1.6 kg / 3.5 lbs
28cm / 11"
45cm / 17.7"
28cm / 11"
Size 10
Up to 16"
6.3" (W) - 45.7" (L)
LARGE
51 L / 13.4 GAL
1.8 kg / 4.0 lbs
32cm / 12.6"
50.8cm / 20"
32cm / 12.6"
Size 13
Up to 16"
6.7" (W) - 51.5" (L)

FAQS

What makes the CORE PRO Mini Duffel different?

The CORE PRO Mini Duffel is an upgraded version of our best selling CORE gym bag. It keeps the same proven CORE function, now upgraded with magnetic belt sleeve closures, a larger velcro patch panel, our most heavy-duty shoulder strap, custom hardware and reinforced webbing.

Does the CORE PRO Mini Duffel fit a lifting belt?

Yes. The CORE PRO Mini Duffel has a dedicated external lifting belt sleeve designed to fit the KNKG Lifting Belt. The belt sits outside the main compartment, helping save internal packing space.

Will it fit other lifting belt brands?

The Mini belt sleeve is designed to fit the KNKG Lifting Belt only. Other lifting belt brands may vary in thickness, stiffness and sizing, so we do not recommend it as a universal belt sleeve.

What size is the CORE PRO Mini Duffel?

The CORE PRO Mini Duffel is a compact 15L gym duffel, measuring approximately 38cm wide x 23cm high x 18cm deep. It is built for lighter gym sessions, daily carry items and small gym essentials.

Does the Mini Duffel have shoe storage?

No. The CORE PRO Mini Duffel is designed for compact carry and does not include dedicated shoe storage. For shoes, clothes and larger gym gear, we recommend moving up to a larger CORE Duffel size.

What should I pack in the CORE PRO Mini Duffel?

The Mini is best for smaller gym essentials like accessories, wraps, straps, bottles, towels, daily carry items and your KNKG Lifting Belt on the outside. It is not designed as a full clothes-and-shoes gym bag.

Can I add patches to the CORE PRO Mini Duffel?

Yes. The CORE PRO Mini Duffel includes a large velcro patch panel so you can customize your setup with compatible patches.

Is the lifting belt included?

No. The lifting belt is sold separately. The CORE PRO Mini Duffel includes the dedicated belt sleeve, but the belt itself is not included.

4.8
Rated 4.8 out of 5 stars
Based on 1,175 reviews
Total 5 star reviews: 1k Total 4 star reviews: 107 Total 3 star reviews: 13 Total 2 star reviews: 5 Total 1 star reviews: 12
97%would recommend these products
Slide 1 selected
1,175 reviews
  • DP
    Daniel P.
    Verified Buyer
    Reviewing
    CORE Duffel Medium 35L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding, CrossFit, Olympic Lifting
    Using For: Gym Bag, Sport / Fitness, Every Day Carry, Work
    Rated 5 out of 5 stars
    Awesome Gym Bag!

    Wish I found this sooner. Shoulder strap is comfortable, the material feels durable, variety of pouches/zip pockets for organization of smaller items. And the perfect space for all the gym essentials.

    Also the zippers open effortlessly, it’s a nice touch.

  • RL
    Robin L.
    Verified Buyer
    Reviewing
    CORE Duffel Mini 15L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Fight & Combat Sports
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Love it!

    I use this bag to carry essentials to the gym and to Taekwondo classes. It's big enough to carry everything I need but still fits in a gym locker. Construction seems sturdy.

  • KW
    Kelly W.
    Verified Buyer
    Reviewing
    CORE Duffel Mini 15L
    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
    I love this mini!

    I didn’t need the larger duffle and chose the mini and it did not disappoint.

    Customer service was 10/10 and they sent me measurements to determine if my lever belt would fit and it did.

    Great bag, great company.

  • J
    Jeremy
    Reviewing
    CORE Duffel Waxed Canvas Medium 35L
    I recommend this product
    Rated 4 out of 5 stars
    4 Stars

    Quality of material feels amazing. Design is awesome. Only issue is the snaps for the handles comes undone with no effort. I don’t really use that feature much but it is annoying and if it was a prime feature for me it would be disappointing. Im eyeing the backpack as a daily use bag, maybe next year. Great bag.

  • WW
    Weston W.
    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, Olympic Lifting, Bodybuilding, Fight & Combat Sports
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Perfect Gym Bag

    Perfect size, great quality, and keeps things simple

CORE PRO Duffel — Mini 15L Gym Bag with External Lifting Belt Storage

The KNKG CORE PRO Mini Duffel is a compact 15L gym bag with external lifting belt storage, built for lifters who want to carry the essentials without unnecessary bulk.

Secure your KNKG lifting belt to the outside of the duffel while the streamlined interior carries your training clothes, lifting accessories, bottle, valuables and iPad.

A Compact Gym Duffel Designed to Carry a Lifting Belt

Weightlifting belts are bulky and can take up most of the usable space inside a small gym bag. Packing your belt internally can leave less room for clothes, sleeves, wraps, chalk and the other equipment needed for training.

The CORE PRO Mini Duffel solves this problem with dedicated external lifting belt storage. Your KNKG lifting belt stays secured to the outside of the bag, leaving the compact 15L interior available for the rest of your gym essentials.

  • Save Internal Space: Carry your lifting belt externally instead of filling the main compartment.
  • Secure Belt Storage: The external belt attachment helps keep your KNKG lifting belt held firmly against the duffel while you are on the move.
  • Quick Access: Remove your lifting belt without unpacking your clothes or training accessories.
  • Compact Carry: Bring the equipment you need without carrying an oversized gym bag.

Compact 15L Capacity for Essential Gym Gear

The CORE PRO Mini Duffel is designed for lifters who prefer a smaller, lighter gym bag. Its streamlined 15L capacity provides room for essential training equipment while remaining easy to carry, store and transport throughout the day.

It is ideal for shorter training sessions, minimalist gym setups and anyone who arrives at the gym wearing their training shoes.

Built for Weightlifting, Powerlifting and Strength Training

The CORE PRO Mini is not a generic small duffel with gym branding added to it. It is a purpose-built weightlifting gym bag designed around the accessories used during strength training, powerlifting, bodybuilding and functional fitness sessions.

Use it for daily gym visits, commercial gyms, powerlifting clubs, bodybuilding workouts, strength and conditioning sessions or training while travelling.

What Fits Inside the Mini 15L CORE PRO Duffel?

The 15L interior is made for a focused training setup. With your lifting belt carried externally, the CORE PRO Mini Duffel can hold essential gym equipment such as:

  • A lightweight change of training clothes
  • Knee sleeves or elbow sleeves
  • Wrist wraps, lifting straps and grips
  • Chalk, tape and smaller lifting accessories
  • A compact gym towel
  • A shaker bottle or water bottle
  • Headphones and small training electronics
  • Snacks or post-workout supplements
  • Phone, wallet, keys and other valuables
  • An iPad or similarly sized tablet

Carrying your lifting belt externally helps maximise the Mini Duffel’s compact internal capacity, leaving more room for the equipment you need during your workout.

Dedicated iPad Storage

The CORE PRO Mini Duffel includes storage for an iPad or similarly sized tablet, making it useful for workout programs, training videos, music and everyday organisation.

The Mini is designed for tablet storage only and does not include a laptop compartment.

No Dedicated Shoe Compartment

To keep the duffel compact and maximise usable space for clothing and training accessories, the 15L CORE PRO Mini does not include a separate shoe compartment.

It is best suited to lifters who wear their training shoes to the gym. Anyone who regularly carries a separate pair of weightlifting shoes or sneakers may prefer a larger CORE PRO Duffel with dedicated footwear storage.

Comfortable Grab-and-Go Carry

The compact duffel format makes the CORE PRO Mini easy to grab on the way to the gym, place inside a locker or carry alongside your other daily gear.

Reinforced carry handles and durable webbing help support the bag when it is loaded with lifting accessories, clothes, a bottle and other gym essentials.

More Ways to Personalise Your Mini Gym Bag

An expanded hook-and-loop panel gives you more space to personalise the CORE PRO Mini Duffel with patches. Add your name, gym, country flag, training club, competition patches or KNKG accessories to make the bag your own.

The larger patch area also makes it easier to identify your duffel in a busy gym, locker room or competition environment.

Heavy-Duty Materials and Construction

  • Durable 500D nylon body material with PVC backing
  • Ripstop nylon interior lining
  • Heavy-duty YKK zippers
  • Reinforced nylon webbing
  • Upgraded metal hardware
  • Reinforced carry handles
  • Abrasion-resistant construction for demanding daily use

Smarter Organisation in a Small Gym Duffel

The CORE PRO Mini provides organised storage for clothing, lifting accessories, valuables and an iPad within a compact 15L design. Instead of carrying a large, partially empty gym bag, you can pack the essentials in a duffel that is easier to manage.

External belt storage also prevents your lifting belt from taking over the limited internal space, helping you get more from the Mini’s streamlined capacity.

Who Is the Mini 15L CORE PRO Duffel For?

The CORE PRO Mini Duffel is best suited to lifters who want external lifting belt storage in a compact, easy-to-carry gym bag. It is designed for people who carry a minimalist training setup and do not require dedicated shoe or laptop storage.

Choose the Mini 15L size if you normally carry your KNKG lifting belt, a light change of clothes, sleeves, wraps, a bottle, valuables and smaller lifting accessories. Choose a larger CORE PRO Duffel if you need to pack shoes, a laptop, multiple outfits or additional equipment.

Why Choose the Mini KNKG CORE PRO Duffel?

  • External lifting belt holder designed for KNKG lifting belts
  • Compact 15L capacity for essential gym equipment
  • Small gym duffel without unnecessary bulk
  • External belt storage for better access and organisation
  • Expanded hook-and-loop panel for gym patches
  • Dedicated storage for an iPad or similarly sized tablet
  • Reinforced carry handles and heavy-duty webbing
  • Premium abrasion-resistant materials
  • Heavy-duty zippers, reinforced stitching and upgraded metal hardware
  • Purpose-built for strength training rather than generic everyday carry

Frequently Asked Questions

What is the best small gym bag for carrying a lifting belt?

A small gym bag with external belt storage allows you to carry a bulky weightlifting belt without sacrificing most of the available space inside. The CORE PRO Mini Duffel includes an external lifting belt attachment designed to keep a KNKG lifting belt secure, accessible and separate from the rest of your equipment.

Does the Mini CORE PRO Duffel have a lifting belt holder?

Yes. The Mini CORE PRO Duffel includes dedicated external storage for a KNKG lifting belt. This allows the belt to sit securely against the outside of the bag instead of taking up space inside the compact 15L main compartment.

Which lifting belts fit the Mini CORE PRO Duffel?

The external lifting belt attachment on the Mini CORE PRO Duffel is designed for KNKG lifting belts. Compatibility with lifting belts from other brands cannot be guaranteed.

Is a 15L duffel big enough for the gym?

A 15L gym duffel is suitable for minimalist training sessions and lifters who carry only essential equipment. The CORE PRO Mini can hold lightweight clothes, sleeves, wraps, lifting accessories, a bottle, valuables and an iPad while your lifting belt is stored externally.

Does the Mini CORE PRO Duffel have shoe storage?

No. The 15L CORE PRO Mini Duffel does not include a dedicated shoe compartment. It is best suited to lifters who wear their training shoes to the gym or do not need to carry a separate pair.

Can the Mini CORE PRO Duffel carry a laptop?

No. The CORE PRO Mini is designed to carry an iPad or similarly sized tablet, but it does not include a laptop compartment.

Is the Mini CORE PRO Duffel suitable for powerlifting?

Yes. Its external lifting belt holder and compact storage make it suitable for carrying common powerlifting accessories such as knee sleeves, wrist wraps, lifting straps, chalk and lightweight training clothes.

What is the difference between the Mini and larger CORE PRO Duffels?

The Mini CORE PRO Duffel has a compact 15L capacity and is designed for essential gym equipment. It does not include dedicated shoe storage or laptop storage. Larger CORE PRO Duffels provide additional internal capacity and are better suited to carrying footwear, larger equipment, extra clothing or a laptop.

What is the difference between the CORE and CORE PRO Duffel?

The CORE PRO builds on the original CORE Duffel with smarter external belt storage, upgraded hardware and a larger hook-and-loop panel for greater patch personalisation.

Can the Mini CORE PRO Duffel be used as an everyday bag?

Yes. Its compact 15L size makes it practical for light everyday use, but its layout and features are designed primarily for gym equipment and strength training.