The bottom side, which goes on the ground, has a hemisphere in the center, in some wobble boards, this hemisphere can be moved higher or lower to increase difficulty and therefore the effect.
On some wobble boards, this hemisphere can be moved higher or lower to increase difficulty and therefore the effect. The bottom side, which goes on the ground, has a hemisphere in the center.
The bottom side, which goes on the ground, has a hemisphere in the center. On some wobble boards, this hemisphere can be moved higher or lower to increase difficulty and therefore the effect.
The bottom side, which goes on the ground, has a hemisphere in the center. On some wobble boards, this hemisphere can be moved higher or lower to increase difficulty and therefore the effect.