Pu stress ball,foam ball,pu ball 57mm,hollow nontoxic and without ... and also can do the exercise Pu stress ball,foam ball,pu ball 1.made of PU2.pass EN71, safe for kids ... ,for promotion 5.can print your logoThis toy is made of foam rubber , and used for kids playing or training . ... . LOGO can be printed very well5.weight of 60mm : about 15g6.color:plain, neon, metallic Pu stress ball,foam ball,pu ball