This base layer run jacket is perfect for pushing your pace or recovery runs. Calia BodyBreeze and BodyFree technologies deliver a moisture wicking and odor inhibiting fabric that breathes with you. An added sleeve flap is perfect when pulled down for extra coverage from the cold. Fit & Design Base layers for running in cold weather Fabric that breathes with you Sleeve flap, pulled down for extra coverage from the cold Front zipper Technology BodyBreeze wicking technology pulls moisture away from the skin and boasts a rapid evaporation time so you stay dry, cool and comfortable BodyFree technology inhibits odor and lasts wear after wear so you stay fresh. Reflective details for enhanced visibility in low light and at night Brushed CaliWarm fabric retains warmth UPF technology helps protect your skin against harmful UV rays (rated according to ASTM D6603). UV protection is limited only to the areas covered by the fabric.