材质：ABS、TPE、GP。尺寸：方块5cm，共12片。锻炼幼儿听力发展，使之感受声音的大小。还可玩认识颜色、辨别声音、按大小排序、配对等游戏。
Tots get a hands-on sensory experience with our irresistible see-inside blocks! 12 baby-safe blocks are filled with balls in 3 sizes & 4 colors—and they make intriguing sounds with every shake! With soft plastic edges for easy gripping; each is 2".
