$4.00 incl GST & delivery
A bouncy putty that shows its true colour in hot water! The putty contains leuco dyes that vividly change colour around 35C. A fun reversible change. It demonstrates energy changes and heat flow. (This is the best quality thermochromic putty – we went to great lengths to find these).
Age: 5 to 12 years
Included: 25g putty of one colour in metal tin & 1 instruction sheet
Minimum order: 12 (packs of 12) FREE shipping