Oo-Tama-Hakobi(Big ball progressing)

is a competition to create a team with several people, around the course as it is lifting the big ball.
It is felt that such arrangements version like Oo-Tama-Korogashi(The big ball rolling).

There was a decent weight It is made in upholstered in bamboo The big ball of before, but now because it is a rubber ball, it is likely to light compared to before.