The legs are the fastest point on the bike and move directly into the headwind. This is exactly where the AERO WHITE 2.5 socks come in: aerodynamically optimized to reduce resistance where it matters most. Aerodynamic design – developed for the most wind-exposed point on the bike. Pro White: clean, lightweight, race-ready. Breathable Italian fabrics – cool and dry at high speeds. Compression fit for better circulation over long distances. Durable craftsmanship from Medellín.