What Our Gearhead(R) Experts Are Saying: "This is my go-to jersey for shoulder season rides when a light jacket is too much but I still need insulation. The fleece-backed fabric has just the right amount of stretch and warmth, and I love how the grid lining helps wick away sweat without adding bulk."We turn to the Pearl iZUMi Attack Thermal Jersey when crisp air rolls in but we're not ready to trade comfort for coverage. This versatile layer thrives on fall climbs, early spring rides, and even deep winter outings when worn under a shell. With a cozy thermal fleece interior and dialed fit, it delivers essential warmth without feeling heavy or restrictive. Pearl iZUMi built this jersey using lightweight Transfer Thermal fabric with grid-channel construction that adds breathability and stretch. Three rear pockets store gloves, snacks, or a wind vest, while a zippered security pocket stashes our phone. BioViz(R) accents boost low-light visibility when dusk arrives early.