The Spring Fall Sock P3 is built to hold warmth without trapping the moisture that makes cold feet colder. A 7 inch cuff sits tall enough to eliminate the gap that shows up between a sock and knee warmers or tights, a detail that matters more in cool, damp conditions than in dry summer heat. The blend stays snug through a regular fit without adding bulk inside a cycling shoe. What Our Gearhead(R) Experts Are Saying:"My feet stay dry through a cool, damp start instead of going clammy once I warm up, which is the actual test for a sock like this. That's the difference between a sock that just feels warm at the door and one that still feels right an hour in."