Castelli's modern take on the classic Winter cycling cap of days gone by, gives you the benefits of modern day fabric with classic design. Offered in a variety of colors that should combine nicely with most of your cycling wardrobe , we are sure these will be popular off the bike as well. Castelli's Warmer fabric will provide warmth and moisture-wicking. The headband has a polypropylene liner to help improve the wicking in this area even further. Ear protection is provided by flaps that neatly fold up or away when you don't want or need them. This cap has a peak. One size fits all.