Tall and warm with little bulk and plenty of support, the moderately compressive Distanza 20 sock from Castelli, is your perfect companion for extended winter rides. The Merino wool blend delivers the thermal value you need, while also helping wick away moisture and fight odor. Nylon fibers in the heel and toe increase durability and reduce friction in these high pressure areas while also securing better fit, assisting a compressive, supportive band around the arch and midfoot.