Professor Pengelly's Thermo Reactive Putty - Sunset Red
Professor Pengelly's Putty from Toysmith is made for fingers of creative thinkers. Thermo reactive putty changes color with the heat of your hands. This putty is a sunset red color before being held, but once the temperature of the putty rises, it turns a bright yellow! This putty provides endless days of fun, color-changing play and scientific stress relief as it never dries out inside of the tin. Recommended for ages 8 and up.
- Tin holds 3.2 oz of thermo reactive putty in sunset red
- Changes from red to yellow with heat
- Never dries out in tin