PLUS Duffel Medium 45L

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,918 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

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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 1,918 reviews
98%would recommend these products
Slide 1 selected
1,918 reviews
  • CG
    Christopher G.
    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, CrossFit, Olympic Lifting
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    Quality and quantity finally together

    I have been through many gym bags. Either the quality was horrible or the amount of pockets/storage options was limited. My KNKG bag solved both of those. My two favorite things about my bag are the magnet I snap buttons and the zippers. The magnetic snaps make it easy so I don't have to fumble with lining them up. It's like they almost find themselves. Just get the snaps close enough and they pull together. Not only do they hold in place but they also come apart easily when I need to open them. I don't know how that would be possible but it is true. The zippers are smooth. No more using two hands. With one hand the zippers open. I don't have to hold on to one end while I open them up. Wherever my bag lays it stays put while pull on the zipper. The bags never slides towards the direction I pull. The number of pockets are tough for all my items. I can carry everything together. No more tailoring what I carry depending on the workout I will be doing. The rubber shoulder pad on the strap stays in place, so there is no need to adjust my bag because is is sliding off my shoulder. The warranty that KNKG offers is great too. Although, I don't ever see the need to use it because the quality is great. I believe this will finally be the last gym bag I will ever purchase, but not the last bag I will purchase from KNKG. I will be looking here first for any other bags I need for small trips and backpacks for work.

  • DM
    Dj M.
    Verified Buyer
    Reviewing
    PLUS Duffel Mini 15L
    I recommend this product
    Rated 5 out of 5 stars
    Worth the investment

    I was looking for a daily gym/camera bag and this was perfect. Quality is excellent and the size is just right. If you're looking at this to carry a camera, definitely scoop the divider insert. I didn't realize the back didn't come with it (apparently I'm blind, because it clearly states it doesn't). Are there cheaper alternatives? Probably, but I would pay the extra for the quality.

  • C
    Cameron
    Reviewing
    PLUS Duffel Medium 45L
    Rated 3 out of 5 stars
    3 Stars

    Right away the magnetic snap button on one of the front pockets came off. Otherwise decent. Design is fairly familiar: if the bag is even moderately full, the shoe pockets can’t be used.

  • JT
    Jacob T. R.
    Verified Buyer
    Reviewing
    PLUS Duffel Mini 15L
    I recommend this product
    Rated 5 out of 5 stars
    Perfect Gym Bag

    Great bag, great size, great for the days I dont want to bring to much to the gym.

  • RS
    Robert S.
    Verified Buyer
    Reviewing
    PLUS Duffel Mini 15L
    I recommend this product
    Rated 5 out of 5 stars
    More room

    Great bag

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