Plum
Bone rib with a plum F. Aero leg, mesh where it matters.
One email when Batch 001 opens, 24 hours before anyone else.
The leg. A ribbed aero knit runs the full 20 cm of the leg. The ribs work as vortex generators: they trip the airflow early so it stays attached around the calf instead of tearing away behind it. In the tunnel that is worth around 4 to 6 watts at 45 km/h against a plain sock. Enough to notice at the end of a long day. Not enough to make you insufferable about it. That part is on you.
The cooling. Two open-mesh zones, across the instep and up the back of the calf, where skin temperature runs highest. The yarn is a 70/25/5 blend: polyamide 6.6 for strength and recovery, a hollow-core polyester that moves moisture off the skin, and elastane for hold. The mesh zones carry about 40% less fibre than the rib, so heat leaves the foot instead of sitting in it. Ridden at 35 degrees. Still fine at 5.
The fit. Light compression through the leg, a seamless toe and a thin footbed that disappears inside a race shoe. Sized by calf circumference, not shoe size, because the calf is what decides whether an aero sock stays up. UCI height compliant. About 38 g a pair in a size M.
The making. Knitted in Castel Goffredo, Italy, the town that has made Europe's performance hosiery for a century. One colour per batch, one run, then it is retired.