What Our Gearhead(R) Experts Are Saying:"I wear the Puro 4 Jersey for those crisp fall mornings when I want a little extra warmth. The 3D knit fabric traps heat really well, and the snug fit keeps everything aerodynamic and comfortable."We're always searching for that perfect blend of warmth and stretch for those in-between days, and the Puro 4 Jersey delivers. The 3D knit construction balances breathability with warmth, so we can keep pushing the pace without getting clammy or chilled. Reflective details on the shoulders and pockets boost visibility, while the close-to-body fit keeps everything streamlined for smooth transitions from flat to climb. From long autumn miles to chilly spring spins, this jersey is our trusted companion when the forecast keeps us guessing.