Pro Green Roller Self Massage Ball Physio Gym Trigger Point Pain Relief ToolFeatures -Promote blood circulation-Relax nerves-Strengthen the body flexibility-Improve balance ability-For all age-Surface smooth， no hurt for skin-Use on the back of the neck shoulder arm hip legsSpecifications Material\uff1aEnvironmental protection siliconeSize\uff1aSuitable for age: children， adults and the old manTarget User: Cervical vertebrae fatigue， patient with arthralgia， chauffeur， Office workers， laborerPackage included1x Massage Ball / in a pack