The Castelli Alpha 18 Sock keeps our feet and ankles warm and protected as we continue to put miles in on our bikes during the cold winter. Its merino wool blend and PrimaLoft insulation keep our feet from freezing while also ensuring we don't overheat, thanks to its breathable and moisture-wicking properties.
Material: merino wool blend, PrimaLoft insulation;
Height: crew;
Weight: lightweight;
Cushion: none;
Activity: road cycling;
Manufacturer Warranty: 1 year;
storecredits: 0.0;
Style Variants
Available Colors: Deep Bordeaux/Dark Gray, Vivid Orange/Dark Gray
Size Reference for CASTELLI Alpha 18 Sock
Available Sizes: S/M













