This is the Crystal Art Activity Kit from Revell. Suitable for Ages 8 & Older. FEATURES: An ideal way for Cub Scouts to earn achievement awards Crystals grow right before your eyes INCLUDES: Crystal growing tray Magic crystal powder 3.5 oz (100g) mono-ammonium phosphate Base stones COMMENTS: Boy Scouts of America® Officially Licensed Product Due to small parts, please keep away from children 3 years and younger Kit contains chemicals that may be harmful if misused tlh 8/27/10