Speed bags are small, air-filled bags anchored at the top to a rebound platform parallel to the ground. Speed bags help a fighter learn to keep his or her hands up, improve hand-eye coordination, and learn to shift weight between feet when punching. They are also known as speedballs or speed ball bags. They are generally filled with air and fitted around a tight PU-based or leather material. They come in various sizes, ranging from the large 13x10" (33x25 cm) and 12x9", midsize 11x8", 10x7" (25x18 cm) and 9x6" , to the small 8x5", 7x4" and 6x4" (15x10 cm). Generally the larger the bag, the slower it is and the more force is required to keep it going. Large bags are used more for building strength and endurance, while smaller bags allow the training athlete to focus on faster hand speed, timing and coordination. Beginners might view this bag more as a "control bag", not a speed bag, for they will not be able to punch both quickly and repetitively until they gain control over their swinging force and speed. Although speed bags are normally hung vertically, recently the additional method of hanging a bag horizontally on a wall has regained popularity. This was very popular during the early twentieth century, specifically the 1920s–1940s era. The same punching skills may be used on the horizontal bag that are used when it hangs vertically. Coordination Bag is a new  type of a speed bag that moves unpredictably rather than rhythmically. Additionally, due to the tedious mounting and anchoring necessary when installing a traditional speed bag platform, a portable speed bag platform that installs in a doorway has been created. Designed so that downward pressure stabilizes this portable speed bag platform, it can be installed and removed through a tension system that allows for use in any doorway. A heavy bag is a larger, cylindrical bag, usually suspended by chains or ropes and used for practicing powerful body punches, and can be used to toughen hands or any other limb used to hit the bag. Heavy bags are for developing power; technique is best learned on the punch mitts or pads. Some variants of heavy bag are a Banana Bag used in Muay Thai and which is longer than a regular heavy bag  to train low kicks and knee strikes  and a slim line bag that is thinner than a heavy bag. A Wall Bag which is a type of bag that is attached to a wall and can be used for training hooks and uppercuts. A "body opponent bag" on a pedestal mount Body-shaped training aids such as the modern "body opponent bag" are made primarily of synthetic materials, and punching bags are sometimes mounted on a weighted pedestal rather than hanging from above. These bags try to simulate a live opponent while providing an opportunity to practice vital area strikes which are generally unsafe to perform on a sparring partner. These are not considered punching bags in the strict sense, but modern versions of apparatus such as the wooden man apparatus of Chinese Wing Chun, the medieval quintain, and target dummies used in modern bayonet training. Large inflatable balloons with weighted bases are another kind of punching bag, often painted with a picture and sold as a children's toy.
Speed bags are small, air-filled bags anchored at the top to a rebound platform parallel to the ground. Speed bags help a fighter learn to keep his or her hands up, improve hand-eye coordination, and learn to shift weight between feet when punching. They are also known as speedballs or speed ball bags. They are generally filled with air and fitted around a tight PU-based or leather material. They come in various sizes, ranging from the large 13×10″ (33×25 cm) and 12×9″, midsize 11×8″, 10×7″ (25×18 cm) and 9×6″ , to the small 8×5″, 7×4″ and 6×4″ (15×10 cm). Generally the larger the bag, the slower it is and the more force is required to keep it going. Large bags are used more for building strength and endurance, while smaller bags allow the training athlete to focus on faster hand speed, timing and coordination. Beginners might view this bag more as a "control bag", not a speed bag, for they will not be able to punch both quickly and repetitively until they gain control over their swinging force and speed. Although speed bags are normally hung vertically, recently the additional method of hanging a bag horizontally on a wall has regained popularity. This was very popular during the early twentieth century, specifically the 1920s–1940s era. The same punching skills may be used on the horizontal bag that are used when it hangs vertically. Coordination Bag is a new When|date=April 2021 type of a speed bag that moves unpredictably rather than rhythmically. Additionally, due to the tedious mounting and anchoring necessary when installing a traditional speed bag platform, a portable speed bag platform that installs in a doorway has been created. Designed so that downward pressure stabilizes this portable speed bag platform, it can be installed and removed through a tension system that allows for use in any doorway. A heavy bag is a larger, cylindrical bag, usually suspended by chains or ropes and used for practicing powerful body punches, and can be used to toughen hands or any other limb used to hit the bag. Heavy bags are for developing power; technique is best learned on the punch mitts or pads. Some variants of heavy bag are a Banana Bag used in Muay Thai , which is longer than a regular heavy bag and is used to train low kicks and knee strikes , and a slim line bag that is thinner than a heavy bag. A Wall Bag is a type of bag that is attached to a wall and can be used for training hooks and uppercuts. A "body opponent bag" on a pedestal mount Body-shaped training aids such as the modern "body opponent bag" are made primarily of synthetic materials, and punching bags are sometimes mounted on a weighted pedestal rather than hanging from above. These bags try to simulate a live opponent while providing an opportunity to practice vital area strikes which are generally unsafe to perform on a sparring partner. These are not considered punching bags in the strict sense, but modern versions of apparatus such as the wooden man apparatus of Chinese Wing Chun, the medieval quintain, and target dummies used in modern bayonet training. Large inflatable balloons with weighted bases are another kind of punching bag, often painted with a picture and sold as a children's toy.
R
13x10" (33x25
13×10″ (33×25
R
12x9", midsize 11x8", 10x7" (25x18
12×9″, midsize 11×8″, 10×7″ (25×18
R
9x6"
9×6″
R
8x5", 7x4" and 6x4" (15x10
8×5″, 7×4″ and 6×4″ (15×10
A
When|date=April 2021
R
and
,
A
and is used
A
,
D
which