PLUS Duffel Medium 45L
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Red KNKG PLUS Duffel Shoe pocket with 2 pairs of sneakers
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PLUS Duffel Medium 45L

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,814 Reviews)
$180
Size: Medium 45L
Small 33L
Small 33L
Medium 45L
Medium 45L
Large 63L
Large 63L
Color: Redwood
Charcoal
Charcoal
Black
Black
Redwood
Redwood
MEDIUM 45L BLACK · Restocking Mid March 2026
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OUR CLASSIC ALL-ROUNDER GYM DUFFEL

• 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 1,814 reviews
Total 5 star reviews: 1.6k Total 4 star reviews: 150 Total 3 star reviews: 21 Total 2 star reviews: 5 Total 1 star reviews: 4
98%would recommend these products
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1,814 reviews
  • VV
    Victor V.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Gym bag

    Perfect gym bag epicly strong many pockets compartments for all gear son loved his bday present

    Was this helpful?
  • PM
    Paul 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, CrossFit, Weightlifting
    Using For: Gym Bag, Sport / Fitness, Every Day Carry
    Rated 5 out of 5 stars
    Best gym bag

    Love it. Holds everything I need and then some without being too big to fit in a locker. Pouch for shoes and sauna clothes is clutch

    Was this helpful?
  • BS
    Brad 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: Every Day Carry, Gym Bag
    Rated 5 out of 5 stars
    Superb Bag!

    This bag is very practical and extremely well-made! Hope to use this for life!

    Was this helpful?
  • SH
    Sean H.
    Verified Buyer
    Reviewing
    PLUS Duffel Medium 45L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Fight & Combat Sports, Functional Circuit Training
    Using For: Gym Bag, Sport / Fitness
    Rated 5 out of 5 stars
    PLUS Duffel Medium 45L – Built Like Equipment, Not a Bag

    This isn’t a typical gym bag. It feels more like field gear than fashion gear.

    Tons of usable compartments without feeling overbuilt. Material is tough, zippers are heavy-duty, and it holds its structure even when packed out.

    I run it with lifting gear, shoes, change of clothes, towel, and accessories — still organized, nothing collapsing.

    If you train seriously and want a bag that keeps up, this is it.

    Was this helpful?
  • 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!

    Was this helpful?
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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