AQUABOX - a hydropneumatic system based on water filler and pneumatic shock absorber allows you to adjust the stiffness and weight, ensuring safe and comfortable absorption of impact energy. The bag is made of German reinforced PVC fabric of the Plastel brand. It is a few inner shells, one of them - power. It is made of durable five-layer PVC-reinforced water-gastight fabric and serves as a shell to hold water inside the bag, that is, the working field of the strikes, as well as to give the projectile the necessary rigidity. One of the advantages of the water filled boxing bag is the presence of a hydropneumatic valve, with which you can adjust the most important characteristics of this projectile - rigidity and weight. Trainers and athletes have appreciated the properties of our projectile, as in just a few minutes you can change the weight and stiffness of the bag and give it a new quality to conduct another intensity training, depending on the training of an athlete. The advantage of this bag is injury prevention - the elasticity of the water filler in combination with the air shock absorber allows you to dampen shock waves, and by setting the required modes of rigidity, you can minimize the harmful effects of shock loads on athletes' muscles, joints and spine. The kit also includes a complete suspension system: a carabiner, chains, a split ring, which allows you to securely fix the bag in space or, if necessary, disassemble. The key to open the valve is included in the boxing bag. In the AQUABOX bag, the hinges for the fastening ring are made of high-quality genuine leather and additionally stitched. To bring the projectile into position it is necessary to unscrew the valve cup with a key to open the valve and pour water through the hole in the valve. ATTENTION: Do not allow water to enter the space between the outer and inner shells.