http://news.yahoo.com/gel-balls-threat-toddlers-doctors-102657392.html?_esi=1
The colored balls, marketed under the brand name Water Balz by Ohio-based DuneCraft Inc, are small to begin with, but can grow to the size of a racquetball when placed in water.
The colored balls, marketed under the brand name Water Balz by Ohio-based DuneCraft Inc, are small to begin with, but can grow to the size of a racquetball when placed in water.