EXTRA-LONG AIR-WATER SANDBAG

The present invention discloses an extra-long air-water sandbag which comprises one inner bladder and one external bag. Wherein, said external bag is the bag to hold the said inner bladder and covers the external of the said inner bladder. The said inner bladder further comprises one inner and outer layer container set and at least one separation layer gas container. The inner and outer layer container set further comprises one gas container and one liquid container. The said gas container is a bladder for gas storage placed in inner compartment of said inner and outer layer container set. The said liquid container is a bladder for liquid storage placed in outer compartment of said gas container. Or, the said gas container is a bladder for gas storage placed in outer compartment of said inner and outer layer container set; and the said liquid container is a bladder for liquid storage placed in inner compartment of said gas container. The said extension layer gas container is a bladder for containing gas and housed at the top, bottom or top and bottom of the said inner and outer layer container set and fixedly connect or couple to the top, bottom or top and bottom of the said inner and outer layer container set to increase the total length of space of gas container of the punching bag. As the length of gas container is increased, combat training for the feet can be hence achieved.