Award winning, celebrated when the temp rises, we tested the Radiator Mesh in the most oppressive heat and humidity (New England designed) to meet the demands of long distance gravel racing (Dirty Kanza winning) and mid-summer climbs. The Radiator Mesh Jersey performs when rides are otherwise postponed. It’s namesake is derived from the magical fabric used across the jersey front - Polartec Delta, a complex knit made with Tencel that actively cools you as you move through the air. Updated for 2020 with a new version of our perforated mesh fabric on the sleeves and back, which is made of recycled polyester and provides SPF30 sun protection. FEATURES: Polartec Delta mesh fabric actively cools like a radiator Ultralight recycled fabric on the sleeves and back provides support and excellent fit without added weight, and SPF30 sun protection. Reflective logos and trim details for visibility Crew-style collar Lightweight YKK CamLock zipper with zipper garage