Global Technacolour Heat Reactive TShirt All 80s Children rejoice the thermal Tshirt phenomenon is back & its better than ever Watch in amazement as the Tshirts change colour in front of your eyes When you touch the tshirts they react to changes in temperature & change colour When the fabric cools it changes back to the cool colour You can leave hand prints all over your interactive heat sensitve tshirt again & again for years of use Features Heat Reactive Fabric Changes colour with body heat Hyper Fix Protects the dye against washing & normal detergents Machine Washable Machine Dryable No colour Loss Screen Printable