Hardness : about 45-50 degreed
Size : Small version : Dia. 6.8* Length 14.5cm
Big version: Dia. 10.5* Length 20.5cm

Benefit
This massage ball can be used on various body parts such as the back, neck,
shoulders, arm, hips, buttocks, legs, and even calves and feet. It effectively
breaks down muscle knots and releases stress and tension with precision.