PLUS Duffel Medium 45L

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,844 Reviews)
$180
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BUILT-IN SHOE STORAGE. ZERO GYM GEAR CONTAMINATION. 

• Dual internal shoe zone
• Dual bottle pockets
• Multiple compartments and pockets 

If it ain’t broke, don’t fix it? WRONG. Always strive for better. That’s why we boosted our original duffel. With the most durable construction and optimized functionality, the PLUS Duffel will elevate your every day with the utility that will help you achieve more. Get on the right side of prepared and discover a new level of focus.

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 PLUS Duffel is made from:

• 1000D nylon body material

• Ripstop nylon lining

• YKK zippers

• Steel buckles

• Hypalon trims

PLUS DUFFEL
SIZE COMPARISON
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
SMALL
33 L / 8.7 GAL
1.3 kg / 2.8 lbs
27cm / 10.6"
45cm / 17.7"
27cm / 10.6"
Size 15 Shoes (x1 pair)
MEDIUM
45 L / 11.9 GAL
1.5 kg / 3.3 lbs
30cm / 11.8"
50cm / 19.7"
30cm / 11.8"
Size 15+ Army Boots (x2 pairs)
LARGE
63 L / 17 GAL
1.5 kg / 3.3 lbs
33cm / 13"
55.9cm / 22"
30cm / 11.8"
Size 15+ Army Boots (x2 pairs)
PLUS DUFFEL
SIZE COMPARISON
Capacity
Bag Weight
Height (H)
Width (W)
Depth (D)
Shoe Storage
,
SMALL
33 L / 8.7 GAL
1.3 kg / 2.8 lbs
27cm / 10.6"
45cm / 17.7"
27cm / 10.6"
Size 15 Shoes
(x1 pair)
MEDIUM
45 L / 11.9 GAL
1.5 kg / 3.3 lbs
30cm / 11.8"
50cm / 19.7"
30cm / 11.8"
Size 15+ Army Boots
(x2 pairs)
LARGE
63 L / 17 GAL
1.5 kg / 3.3 lbs
33cm / 13"
55.9cm / 22"
30cm / 11.8"
Size 15+ Army Boots
(x2 pairs)

PACK FOR MOVEMENT

The New York Times Logo

The best traditional gym bag for anyone who wants to bring fresh clothes to a workout and take sweaty clothes home again, without your gear resembling a fragrant swamp. It's tough enough to last a limetime, and its six compartments kept us organized.

GEAR UP FOR IMPROVEMENT

4.9
Rated 4.9 out of 5 stars
Based on 1,844 reviews
Total 5 star reviews: 1.7k Total 4 star reviews: 153 Total 3 star reviews: 21 Total 2 star reviews: 6 Total 1 star reviews: 4
98%would recommend these products
Slide 1 selected
1,844 reviews
  • GN
    Gym N.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? CrossFit, Weightlifting, Bodybuilding
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Last bag you'll need

    You will be hard press to find a bag that is tougher holds its shape and all your stuff without fail.

  • RS
    Russell S.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Other
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    Solid, looks great, comfortable.

    I started with the 45L but upgraded the size to the next large. After the upgrade, I think the 45L is closer to the size that I wanted, but I'm happy with the larger version too. I enjoy the layout of the pockets and shoe storage. It's an excellent bag.

  • WM
    Will M.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Functional Circuit Training, Bodybuilding
    Using For: Gym Bag
    Rated 5 out of 5 stars
    The quality of this bag compelled me to leave a review.

    This. Is. The. Bag.

    I have owned several gym bags and this is without a doubt the best gym bag I have owned. I work out 6-7 days a week and this bag provides me with what I need: there is space for post-workout clothes, space for a spare set of workout clothes, space for supplements, space for two pairs of shoes, and space for two locks (as well as two spare locks). And there’s still more room. I carry a lifting belt, elbow wraps, and 3 pairs of wrist wraps.

    I still have room.

    It’s water repellent. And very well made. The zippers are excellent and the pockets are very useful.

    I still have room. This is worth every single penny and will last me for years. Well done, KNKG!

    If you asked me to develop perfect gym bag, it wouldn’t come close to this bag.

  • JH
    Jose H.
    Verified Buyer
    Reviewing
    PLUS Duffel Small 33L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Bodybuilding, Weightlifting
    Using For: Every Day Carry, Gym Bag, Sport / Fitness, Work
    Rated 5 out of 5 stars
    Great bag great organization

    Been searching for a bag to take to gym but also keep me organized and without feeling like I dump everything into one large pouch this bag checks everything I got place to separate my shoes from office cloths spot for my shower kit my beard care and self care and place to leave my EDC while I shower. Carries everything I need and more

  • JK
    Joshua K.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Olympic Lifting, Weightlifting, Functional Circuit Training, CrossFit
    Using For: Gym Bag, Sport / Fitness, Every Day Carry, Work
    Rated 5 out of 5 stars
    Mary Poppins Would Be Jealous

    I had done a lot of research into a duffel bag that could do it all - gym, work, short trips, softball coaching, etc. So I was excited to get this medium duffel and I was not disappointed. Do you want to put a lunchbox, jacket, boots, and a uniform into it? No problem! You even have space on the external pockets for more. Even with all of that in there, this duffle still is comfortable to carry with its handles and strap. And the size is such that it fits behind the driver’s seat of my car on the floorboard.

PLUS Duffel — The Original KNKG Gym Bag with Unmatched Shoe Storage

The PLUS Duffel is the bag that put KNKG (then King Kong Apparel) on the map. Originally designed for CrossFit, it’s a traditional gym bag elevated with smarter organization, reinforced durability, and the shoe storage system that changed how athletes pack for training.

Why the PLUS Duffel Stands Out

The PLUS is made for everyday athletes who need smarter storage. With dedicated compartments, reinforced construction, and dedicated shoe zones, this is the bag built to handle every training day.

Shoe Storage by Size

  • Small (33L): Holds 1 pair of shoes up to size 15.
  • Medium (45L): Fits 2 pairs, even size 15+ boots.
  • Large (63L): Fits 2 pairs of lifters, sneakers, or boots.

The PLUS Duffel shoe zone is ventilated to keep the inside fresh and separated from clean gear.

Pockets & Organization

  • Dedicated shoe zones
  • Spacious main compartment for clothing, towel, and bulk gear
  • Side pockets for wraps, straps, and smaller items
  • Quick access valuables pockets for wallet, phone, and keys

Materials & Build

  • 1000D nylon body material
  • Ripstop nylon lining
  • Heavy-duty YKK zippers
  • Steel buckles
  • Hypalon trims for reinforcement

The Toughest Gym Bag Quality

The PLUS Duffel was built to last from the very beginning. Reinforced stitching, abrasion-resistant nylon, and steel hardware means it can take years of daily training and travel — and still hold up like day one.

Why Choose the PLUS Duffel?

  • Classic gym bag design with smarter compartments
  • Dedicated shoe zones sized for lifters, runners, and boots
  • Multiple capacities: 33L, 45L, and 63L
  • Originally designed for CrossFit, trusted by athletes worldwide
  • Proven quality: the bag that started it all