PLUS Duffel Medium 45L

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,767 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 1,767 reviews
Total 5 star reviews: 1.6k Total 4 star reviews: 150 Total 3 star reviews: 19 Total 2 star reviews: 5 Total 1 star reviews: 2
99%would recommend these products
Slide 1 selected
1,767 reviews
  • FB
    Frank 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
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Medium Duffel

    Great construction. Should last many years even with daily use. Love the shoe pockets and the all the other pockets for easy organization.

  • EC
    Elizabeth C.
    Verified Buyer
    Reviewing
    PLUS Duffel Large 63L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Functional Circuit Training, Weightlifting, Other
    Using For: Gym Bag, Work, Every Day Carry, Sport / Fitness
    Rated 5 out of 5 stars
    Fits everything

    This was a Christmas gift for my S/O, I was searching for a bag that could hold everything and was built to last. I came across KNKG and it seemed to be everything I was searching for. Being prior active duty and my S/O still serving, I knew the struggle finding the right gym bag that would hold uniform, workout clothes, boots, towel, waterbottle, and a lunchbox. This bag exceeded my expectations. I recommend it for anyone looking to fit a lot of things for work or even a week-long road trip.

  • DL
    Debra L.
    Verified Buyer
    Reviewing
    PLUS Duffel Small 33L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding, CrossFit
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Best ever!

    The bag that I ordered was perfect. And the Customer Service has been exceptional.

  • CU
    Christine U. B.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Olympic Lifting
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Perfect Gym Bag!

    Bought this for my husband, and he can’t stop raving about how perfect and spacious this bag is. Very satisfied with this purchase! A lot of thought was put into the design.

  • CR
    Christopher R.
    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, Other
    Using For: Gym Bag
    Rated 5 out of 5 stars
    New Owner

    I have searched around for a Gym Bag. By far this has been the most pleasant. I saw a add. I was skeptical but with Black Friday prices in full swing I couldn't pass it up. So far I love the bag the space and pockets it provides. I will say the only down side is the dedicated partioned boxes aren't really made for the bag when two paires of shoes are in the compartment. Actually 1 pair and 2 pair of slides slash barefoot shoes. I find myself trying to close it with some umpf. Lastly the "water bottle pocket" is all that practical. It's a nice touch but don't expect anything bigger that what you can fit a standard cup holder to be secured by it.

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