PLUS Duffel Medium 45L

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,745 Reviews)
$180
ADD ON AND SAVE
Notify Me When Available
Free Shipping Icon
FREE US SHIPPING
OVER $149
Free Return Icon
FREE FIRST
RETURN

GYM DUFFEL WITH SUPERIOR SHOE STORAGE

• 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 1,745 reviews
Total 5 star reviews: 1.6k Total 4 star reviews: 150 Total 3 star reviews: 18 Total 2 star reviews: 4 Total 1 star reviews: 2
99%would recommend these products
Slide 1 selected
1,745 reviews
  • JA
    Jalen A.
    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: Every Day Carry
    Rated 4 out of 5 stars
    Duffel

    Holds my clothes and gear.

    Very good quality. Likening the bag so far

  • AS
    Alyssa 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, Work, Every Day Carry
    Rated 5 out of 5 stars
    Great Gym Bag!

    I bought this bag for my boyfriend and he could not be happier! I almost got him the small but I’m really glad that I sized up to the medium. He uses it for his every day go to bag, carrying his water bottle/protein bottles and supplements, alongside a change of clothes for the gym after work.

    I think I saw someone else state that the duffel bag looked a little green and that is true! In person it is almost like a gray mixed with a dull army green color, he likes it a lot but it is different than just a base charcoal.

  • RS
    Roderick S.
    Verified Buyer
    Reviewing
    PLUS Duffel Small 33L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Functional Circuit Training
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    Great gym bag.

    I like that it has many compartments. It’s spacious enough for for my sneakers , gym clothes/shoes , a towel and H2O bottle .

  • R
    Robert
    Reviewing
    PLUS Duffel Large 63L
    I recommend this product
    Rated 5 out of 5 stars
    5 Stars

    I absolutely dig this bag! It’s spacious enough to hold all my powerlifting gear, including my belt, knee sleeves, straps, wrist wraps, squat shoes, Hokas, and my notorious lift deadlifting shows. I also have my recovery gear, which includes a foam roller, massage ball, and massage gun. I also have my headphones, tripod, and all the random gym-related items that I somehow manage to accumulate. And let’s not forget the extra room for my clothes! I love the quality of the bag. The magnetic snaps are great, the zipper quality is excellent, and the straps are sturdy, both the straps and the hardware. And I must say, the leather touches add a touch of elegance to the bag.

  • PM
    Philip M.
    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: Sport / Fitness
    Rated 5 out of 5 stars
    Pockets. Pockets. Pockets

    Love the variety of pockets to store items to use at the gym. The shoe storage is my favorite. But the number of different size pockets is quite smart to store many different types of needed things. I normally wouldn’t buy a duffel bag for the gym/fitness center but I’m glad I did. Really like 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