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World's First & Only!

The Kewlus Cobra Bag is the world's first & only modular freestanding punching bag that is also DIY compatible. Designed to meet the training needs of professional fighters, it also allows anyone to get started on a small budget. Many customers including pro fighters have compared it to other reflex bags and say it is by far the best in terms of quality, price and versatility.

Loved by Champions

Loved by boxing champions like Tim Tszyu and the McKenna brothers, and embraced by coaches like Paul Briggs, the modular Kewlus Cobra Bag is revolutionising reflex training and is fast becoming the go-to training tool for the top athletes worldwide.

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On National TV!

I had the incredible opportunity to present Kewlus on Shark Tank Australia. Honestly, I’m still pinching myself because never in my wildest dreams did I think I’d be demonstrating my product on national TV, especially on Shark Tank!

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Choose Your Kit:

Visit the Cobra Bag Kits page for help with choosing the kit that's best for you.

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Try & Buy Locally

Check with your local boxing gym for a demo and to buy without paying for shipping.

Sanctum Forge
  • Cobra Bag Customisation & Optimisation Instructions and Videos

    Get the most from your Kewlus Cobra Bag by setting it up with my tips. Included are details on increasing speed, height and improving performance.

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  • Make the Baseboard that's Right for You

    The most common and reliable base solution is to make a baseboard. I cover all the options here, from a basic light weight baseboard to a thick "Stubby" with a double-deck setup.

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  • Increase The Height of Your Cobra Bag

    Are you over 6 foot tall and need a taller cobra bag? Here are some simple ways you can increase the height of your Kewlus Cobra Bag!

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  • Advanced Cobra Bag Setup

    Get the maximum performance and add mobility to your KS3 Cobra Bag with this advanced base setup.

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  • Make a DIY Cobra Bag!

    Make your own fast and powerful cobra bag that is better than many of the commercial cobra bags at just the fraction of the cost!

    Full Instructions 
  • How To Make a $10 PVC Kewlus

    The original PVC and Pool Noodle Kewlus, which you can make from just $10!

    Full Instructions 
  • Make a Cobra Bag Baseboard!

    If you have ordered the Kewlus Cobra Bag kit that includes the Multi Base, the best way to set it up is to make a baseboard for it.

    Full Instructions 
  • Make a Boxing Spar Bar!

    Make this smooth-spinning spar bar for learning to slip punches and improve your defensive skills.

    Full Instructions 
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What's a Cobra Bag?

The cobra bag is a type of reflex punching bag that incorporates a football-sized ball on top of a rod or pole that is able to flex back and forth. The cobra bag is one of the best training tools for boxing training. It's ideal for developing a high level of hand-eye coordination and defensive boxing skills. The interactive nature of the cobra bag makes it fun to train with.

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New & Coming

O

Sporting the powerful KS3 Spring, heavy duty Stainless Steel Mast and the beautifully crafted OctaBase, the O₃ is the ultimate Kewlus design and engineering made for elite fighters and boxing gyms.

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Stainless Steel Mast

The Stainless Steel Mast marks a new level of capability for the Kewlus Modular Cobra Bag intended for professional boxers and boxing gyms.

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Olympic Weight Plate Sleeve

The Kewlus Olympic Weight Plate Sleeve allows you to use Olympic weight plates to greatly enhance the rigidity and performance of your Kewlus Cobra Bag.

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Kewlus Red Bar

The Red Bar has been designed to increase the speed of the Kewlus Cobra Bag. It's specifically made for switching out the Click Bar in the top section of the cobra bag. The Red Bar is 3 inches shorter than the Click Bar and almost 1/3 of the weight, resulting in a much faster cobra bag.

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