You dont need to wait for summer to get back into shape skins dnamic thermal long sleeve top has a brushed thermal interior to take the edge off icy temperatures so you can focus on your workout not the weather thermal fabric for warmth in temperatures as low as 20c 4fstretch airflow mesh under the arm for increased range of motion and breathabilityinternal silicon gripper stops tops from riding upreflective logos on wrists for low light visibilitywith breathable mesh under the arms an