The Air Mamba is invented and designed by Grodex Inc in California. The Grodex Air Mamba bag is product in the Grodex Reflex Collection. The unique aspect of the Grodex Air Mamba Bag is the speed of the punching bag. The speed of the Air Mamba allows the person using it to work on a variety of different boxing techniques. You can work on defense by using head movement, blocking, and angles to avoid being hit by the moving target. The movement of the bag will also allow the person using the bag to work on offensive skills. You can work on timing counter shots, uppercuts, hooks, and straight punches on the Air Mamba Bag. Storage is also not a problem with the product, as you can disassemble it, and move it around with ease. The base of the bag can be filled with water, however Grodex states that we only recommend sand.