Product Description Specifications Reusable thermal patch with heat effect in variety of colors and long lasting. Materials: PVC Features: Reusable thermal patch with heat effect in variedty of colours To activate, bend the metal plate so that the patch hardens and heats up. For reuse, heat water in a container with the patch inside until the inside gel returns to its liquid Decoration Position: Centered Print Size: 3.5 x 5 cm