Sleeveless compression base layer for warm weather riding. Designed to provide active compression to muscles, decreasing lactic acid build up and helping to provide greater endurance. Lightweight, breathable moisture wicking fabric, Ventilated Lycra mesh back panel for increased airflow, Elastic shoulder attachment loops for race collar compatibility, Provides rash protection, 4 Way Stretch KWIK-DRI - Fabric wicks sweat from skin and helps regulate core temperature, 4 Way Stretch Airflow mesh Fabric on back panels,