PLUS Duffel Medium 45L

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,808 Reviews)
$180
MEDIUM 45L BLACK · Restocking Mid March 2026
ADD ON AND SAVE
Notify Me When Available
Free Shipping Icon
FREE US SHIPPING
OVER $199
Free Return Icon
FREE FIRST
RETURN

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 1,808 reviews
Total 5 star reviews: 1.6k Total 4 star reviews: 150 Total 3 star reviews: 20 Total 2 star reviews: 5 Total 1 star reviews: 3
99%would recommend these products
Slide 1 selected
1,808 reviews
  • JB
    John B.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Functional Circuit Training, Weightlifting, Fight & Combat Sports, Other
    Using For: Sport / Fitness, Gym Bag
    Rated 5 out of 5 stars
    Awesome Bag

    This replaced an ancient bag I had that was falling apart. I was a little hesitant to purchase given the price tag, but so glad I did. I don't anticipate having to replace this anytime soon, if ever! It's incredibly well consrtructed and the attention to detail is perfect. Well done!

  • NB
    Nicolas B.
    Verified Buyer
    Reviewing
    PLUS Duffel Small 33L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Olympic Lifting, Weightlifting, Other
    Using For: Gym Bag, Sport / Fitness, Every Day Carry, Work
    Rated 5 out of 5 stars
    33 Liters of Organized Chaos

    I’ve officially stopped calling this a “gym bag” because it’s basically my life bag at this point.

    The PLUS Duffel Small (33L) is the perfect size — big enough to fit gym clothes, shoes, a towel, basketball, water bottle, and whatever random stuff ends up in my bag… but not so big that it feels like I’m carrying luggage into the gym. The compartments are dialed. I can separate shoes and sweaty gear without everything smelling like regret later.

    I use this thing nonstop: gym during the week, pickup basketball runs, and weekend travel. It’s been tossed in car trunks, shoved under airplane seats, and dragged into locker rooms, and it still looks brand new. The material feels legit — thick, durable, and way more premium than most duffels I’ve owned.

    Also worth mentioning: it actually looks good. I’ve gotten asked about it more than once, which has never happened to me with a bag before.

    If you’re debating the size — this is the one. Big enough to carry everything, small enough to not be annoying. Easily the most-used bag I own.

  • PD
    Peter D.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    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: Gym Bag
    Rated 5 out of 5 stars
    Great Bag

    I am still figuring it out. There is more than enough room and plenty of little pockets/compartments for all of my stuff. I'm just trying to figure out the best way for me to get it organized! Size is perfect.

  • JM
    James M.
    Verified Buyer
    Reviewing
    PLUS Duffel Large 63L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Fight & Combat Sports
    Using For: Sport / Fitness
    Rated 5 out of 5 stars
    Most practical bag ever

    This bag with the dividers is extremely practical and by far the best duffel I own. I have probably 7 different duffle bags and am constantly switching out which one I use because they just don’t have the right feel or setup. The outside pockets are perfect for quick access to phone, keys, wallet, headphones ect. The outside long zipper holds me my wife’s Jiu-Jitsu training logs along with body wipes and the shoe compartment keeps our GIs from getting dirt or them. And we can fit both our GIs in there with room for other stuff. We use it for our boys wrestling tournaments where we use one section of the dividers for snacks another for small sized gatorades and then the rest of the inside fits all of their gear perfectly. Use the shoe compartments for their wrestling shoes/street shoes. The end pocket with magnets holds their water bottles perfectly and then there’s another end pocket that is a zipper where we throw their knee pads and singlet at the end of the day to keep the sweaty stuff away from the clean stuff. Couldn’t be happier and there isn’t a bag better than this or A-Type organized personalities

  • JB
    Johnathon B.
    Verified Buyer
    Reviewing
    PLUS Duffel Large 63L
    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
    Its the perfect powerlifting bag!

    I can fit pretty much everything i need and room to spare.

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