Sport-Thieme Freestanding Punching Bag Flex: Quick rebound for effective boxing training. The Sport-Thieme Freestanding Punching Bag Flex is the ideal freestanding bag for boxing training in martial arts schools, clubs, and fitness training in studios. It can be set up flexibly wherever there is space. The sturdy plastic base can be filled with water or sand, providing solid stability and allowing it to withstand even stronger punches. The central spring absorbs the blows perfectly and ensures a quick rebound in all directions. This faster feedback from the padding increases the punching frequency and makes power training even more intense. Height adjustment: No. Filling type: Water, sand. Weight (filled): under 80 kg. Application area: Training. Outer material: Synthetic leather. Product type: Freestanding punching bag. Color: Red. Filling material: Water, sand. Pole material: Metal. Base material: Plastic. Base dimensions: ø 55x30 cm. Weight unfilled: 11 kg. Spring length: 8 cm. Weight filled: 44 kg. Dimensions: ø 28x60x177 cm.