What Our Gearhead(R) Experts Are Saying:"I started a ride cold enough to need the inner gilet, then unzipped the front vents an hour later once I was pushing hard on a climb. The wrist vents actually made a noticeable difference in cooling me down, which I wasn't expecting from something that small."Three season riding means the temperature at the start of a ride rarely matches the temperature an hour in, and the Pro SL Race Advanced Jacket from Endura was built around that exact gap. We zip in the PrimaLoft Evolve inner gilet on a cold morning start, then peel back layers of ventilation as the effort builds, the jacket adjusting almost as fast as the body does. It's less a single garment and more a small system for managing heat across a ride that changes its mind more than once. Long, two way front vents pull air in even at low speed or hunched down in the drops, while a rear exhaust vent keeps that air moving through and out the back. Wrist vents round things out, exposing a spot on the body that turns out to matter more for cooling than most riders would guess. The outer shell blends high stretch, waterproof membrane fabric with a DWR finish, holding up against wind and wet without losing the give a race fit demands. It's a jacket built less around a single condition and more around the reality that fall through spring rarely commits to one.