Thermochromic dyes: Smart textiles: Heat Reactive Jacket by Stone Island, a tracksuit top which changes colour from black to green/ blue once it has reached 27 degrees. The fabric that is cotton nylon with thermosentive liquid crystals that react to heat.
ADIDAS BOYS TRACKSUIT TOP JACKET NAVY BLUE BOYS ADIDAS TRACKSUIT TOP JACKET SIZE YM NAVY BLUE This jacket is pre-owned. It's a BOYS size. Fits a size 10-12-14 BOYS It has no worn damage. Please see pictures for more details. Jacket is like new. adidas Jackets & Coats