Duke Gym Ball

Duke Gym Ball is made of durable and flexible material. It is perfect for both stretching and training. It can even function as a seat if you wish to strengthen your back simultaneously! 

The package includes training tips and the pump.

Size ca. 55cm

The long 90cm gymnastic roller is also good and effective tool to strech your back & chest:

https://www.nordic-duke.com/en/product/nordic-duke-gymnastics-roller-90cm/