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What Are Heavy Bags Filled With? Inside the Punching Bag

Using punching bags is an essential part of boxing training. However, not every heavy bag is created equal. 

So, what are heavy bags filled with? 

There are a variety of fill materials available that make some bags better than others. The trick is knowing what works best for you. 

The makeup of your bag affects how it feels when you punch, its overall durability, and how it enhances (or takes away) from your training.

Securing the right heavy bag is important to secure, so it can support your form, speed, and power as you become a champion-level fighter. 

This article will take you through the traditional heavy bag fill types, showcase what makes Hayabusa’s pre-filled bags stand apart from the competition, and provide a breakdown of determining which heavy bag is best.

Traditional Punching Bag Materials

Every heavy bag has a specific material to make it sturdy and with enough give to absorb the impact of repetitive beatings. Here are the most common ways to fill your bag:

Shredded Textiles

A common choice is using recycled fabrics to pack heavy bags and adjusting the resistance to each fighter’s preference. It’s an eco-conscious and cost-effective way to get the structure and support you need for heavy bag training. 

Foam & Layered Foam Liners

Often used in combination with textiles, foam fill adds shock absorption and reduces joint strain to enhance comfort when training. Cut-up foam and layered foam liners are both used as a way to add more cushion while maintaining enough resistance to test endurance and build strength.

Free Standing Heavy Bag | Best Punching Bag by Hayabusa

Sand

Sand is one of the most popular heavy bag fill types because it’s adjustable to different styles of fighters and training preferences. Since it’s a dense, durable punching bag material, it provides stability and ample shock absorption to build resilience and power.

Water-Filled (Hydro Bags)

Similar to using sand as a heavy bag fill option, water makes it easy to adjust the weight and refill as needed. It also emulates the feel of body strikes and can be transported easily when emptied. Plus, the forgiving impact is easier on the joints without inhibiting the firmness needed for training.

Choosing the Best Boxing Punching Bag

Advantages of Using Hayabusa’s Pre-Filled Heavy Bags

Though there are multiple fill options, a pre-filled punching bag makes boxing training all the more convenient. 

Premium pre-filled bags are especially helpful for fighters adding to their at-home gyms, though they are also beneficial for gym owners who want to have bags that can be easily set up and ready to go.

Hayabusa delivers the option of both. Whether you want a bag you’d prefer to fill with your own chosen materials or get a heavy bag pre-filled, you’ll have what you need to start training right away. 

The 125lb Classic Heavy Bag, 110lb Muay Thai Heavy Bag, and 70lb Classic Heavy Bag are the three pre-filled options available. Each is designed with layered high-density foam and expertly packed for even weight distribution and excellent striking feedback. Other benefits include:

Realistic Impact Resistance

Multi-density padding simulates the resistance of a real opponent while delivering a balanced impact density for consistent punches from boxers of all levels. The innovative construction is engineered to help you refine your form and build unshakeable confidence as you perfect your movements.

Balanced Feedback

A specialized hanging system distributes weight evenly to better absorb impact and provide balanced feedback. The pre-filled punching bags are also equipped with a base D-ring to enhance stability and minimize swing during intense, hard-hitting sessions.

Hayabusa 70lb Classic Heavy Bag

Hayabusa 70lb Classic Heavy Bag
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Hayabusa 6ft Freestanding Heavy Bag

Hayabusa 6ft Freestanding Heavy Bag
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Hayabusa 100lb Muay Thai Heavy Bag

Hayabusa 100lb Muay Thai Heavy Bag
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Hayabusa Heavy Bag

Hayabusa Heavy Bag
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Virtually Indestructible Exterior

Hayabusa gear is known for its highly durable exterior materials, and the heavy bags are no exception. They are built with rich PU leather to handle round after round of punishment without becoming deformed or wearing thin.

Reinforced Support

When initiating power strikes, it’s essential to have a heavy bag you can count on to withstand the beatings. Hayabusa’s pre-filled heavy bag steel support ring fortifies its structure and ensures long-lasting durability.

Which Heavy Bag Is Right for You?

Each Hayabusa boxing bag is designed to boost performance for various training styles and goals. 

Though every heavy bag works well for all boxing and MMA purposes, here is a breakdown to help choose which specific one is right for you.

125lb Classic Bag for Power & Precision

It’s called a classic for a reason. This perfectly balanced, pre-filled punching bag helps fighters build power and precision with every punch. Its high-density padding delivers realistic resistance to improve form and technique before sparring against actual opponents. 

The heavy-duty sturdiness and virtually indestructible exterior ensure a long-lasting support and structure to uphold the toughest of training sessions and improve resilience over time.

100lb Muay Thai Heavy Bag Designed for Dual Pressure

This punching bag is designed with an extended striking surface to execute punches, kicks, elbows, and knees used in Muay Thai. Like the classic heavy bag, the 100lb Muay Thai Heavy Bag provides a uniquely layered foam density padding to deliver realistic resistance and disperse energy evenly. 

It’s the go-to equipment for serious fighters wanting to improve their performance and facilitate greater. The reinforced steel support ring and impenetrable exterior are capable of withstanding constant beatings while maintaining their full weight and integrity. 

70lb Heavy Bag

Delivering the same benefits as the classic 100lb heavy bag, this lighter version is ideal to hone technique in at-home gyms or smaller training spaces. The pre-filled 70lb heavy bag makes it easy to hang with a system that distributes bag weight evenly to provide quality feedback and impact absorption with every punch.

Read: What Equipment Do You Need to Start Boxing?

Hayabusa Heavy Bag | Best Punching Bag by Hayabusa

Finding the Best Heavy Bag, Fill or No Fill 

Investing in quality boxing equipment and gear helps to elevate your training and provide the protection and confidence to go hard every time you hit the bag.

The convenience of a pre-filled punching bag makes creating a training setup extra easy for fighters, from beginners to pros. The layered foam and expert construction deliver the ultimate in density and longevity, optimal for any space.

However, the excellent craftsmanship and attention to design are found in every Hayabusa heavy bag, pre-filled or not.

If you decide to custom-fill your heavy bag, remember each material type affects your workout in different ways. Whether you decide sand, textiles, foam, or water is best, try out different options to determine which is most conducive to your training. 

Whether your goal is to achieve knockout power or simply to solidify your technique, there’s a heavy bag for these goals and every other one in between. 

Step up your boxing training and secure your go-to punching bag. Shop All Heavy Bags.