material : hard , can bounce . buy these toys because when his brother plays lato2 , his younger sister wants to cry too . because lato2 is quite dangerous so buy a bouncing baby ball like this . very interesting because there are colorful lights . even the baby just enjoys playing without being busy fighting with the brothers . Mom is calm . Thank you seller , I bought it####[([0], [2], 'POS'), ([0], [4, 5], 'POS'), ([45], [44], 'POS'), ([49], [51, 52], 'POS')]