Satisfy Running - HeatCrush™ Long Sleeve Base Layer T-Shirt - MoonstruckBuilt for endurance in baking heat Satisfy have developed Heatcrush tech. Sweat wicking and quick to dry this mesh like fabric is highly effective at cooling you down, reacting with sweat or water and airflow it creates a menthol like feel that helps cool the skin. This close to the body base layer allows for layering when the sun goes down or the ease of use for hydration vests etc. Mesh panels under the arms allow for further ventilation. There is a