PLUS Duffel Medium 45L

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,705 Reviews)
ADD ON AND SAVE
Notify Me When Available
Free Shipping Icon
FREE US SHIPPING
OVER $149
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 promise to be free of defects in material or workmanship within its practical lifetime. If there is a defect in materials or workmanship KNKG will repair or replace your bag, including free shipping.

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 1,705 reviews
Total 5 star reviews: 1.5k Total 4 star reviews: 145 Total 3 star reviews: 18 Total 2 star reviews: 2 Total 1 star reviews: 2
99%would recommend these products
Slide 1 selected
1,705 reviews
  • LF
    Lisa F.
    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
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Great Bag

    Love the bag, fits everything in great. Medium size larger than I expected. The wine color is very nice.

  • SR
    Samuel R.
    Verified Buyer
    Reviewing
    PLUS Duffel Large 63L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding, Other
    Using For: Gym Bag, Sport / Fitness, Every Day Carry, Work
    Rated 5 out of 5 stars
    Great Investment for Service Member

    I needed a large bag that I could use to store meals, workout clothes, hygiene items and atleast 2 pairs of shoes. I typically would use my wolfpak back pack, but I would have to supplement it with an extra bag for my boots or towel, and then also have an additional lunch bag that carried 3 of my meals. Now with this duffel bag I fit everything in 1. The different compartments keep everything separated perfectly and I also purchased the dividers that keep my meal prep containers separated from my clothes.

  • PS
    Paul S.
    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
    Awesome Product and five star customer service

    Received my duffle without delays and kept up to date with all shipping details. About a week into using the bag there was a minor problem with one of the clips. I dropped a line to Taylor at Customer Serviced and received an imediate response. No questions or qualms after returning the bag a replacement was on the way. Have bought many products on line before but this is a company you can trust to honour their warranty with customer service to go with it. Thanks Taylor and the whole team, great product and service.

  • AT
    Angela T.
    Verified Buyer
    Reviewing
    PLUS Duffel Large 63L
    I recommend this product
    What type of training is your KNKG bag supporting you with? Weightlifting, Bodybuilding, Fight & Combat Sports
    Using For: Gym Bag
    Rated 5 out of 5 stars
    Duffel

    This gym bag is amazing

  • MB
    Michael B.
    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 5 out of 5 stars
    Great travel bag

    It’s the perfect size to go away for several days. I love all the compartments very high-quality extremely satisfied and happy that I purchased 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