Midweight “polar” layers never really worked for Ciele Athletics. They got cozy right but Ciele Athletics wanted cozy and “really fricken breathable” for your below zero sunday long runs. COOLmatic | EXP DIAMAfleece anchors the performance via a lightweight diamond grid of recycled polyester pile for warmth. Imbedded carbon pushes temperature control to another level. The diamond grid, allows for maximum breathability as well as extra weight reduction. Ciele Athletics added two way half zip for customized ventilation and versatility. Reflective details. The large side pocket, and internal phone pocket keep your run hands free. Oh, speaking of hands. Check the cuffs. Engineered for the inevitable temperature drops, built to keep all of you outside and comfortable no matter what Jack Frost throws your way. Featuring elevated reflective detailing on the back and sides, ensuring you’re seen when the light fades.