Hands down the best winter sock I've ever used and definitely my new favorite. Always impressed with the quality of Castelli gear. Very comfortable. Definitely provide much more warmth and insulation than a typical cycling sock, but they're still sleek and far from bulky. Thinner than the average cotton crew sock. No bunching up or uncomfortable seams, cozy and breathable. I've used them on several rides longer than 3 hours and they were perfect
They keep me warm without taking up a lot of room. Fits great and works as advertised.
Wear these in the summer too. Not too hot. Order size up because they are Castelli. LOL. Actually, I have found wool socks tend to downsize in the wash.
