Castelli Castelli Alpha 18 Sock Black/Dark Gray / S/M
Castelli Castelli Alpha 18 Sock Brilliant Orange/Black / S/M
Castelli Castelli Alpha 18 Sock Military Green/Fiery Red / S/M

Castelli Alpha 18 Sock

Online Only

Apparel may not be exactly as pictured.

The Alpha 18 is a comfortable sock that offers arch support and great breathability.

It is constructed with a blend of PrimaLoft and merino wool that evacuates moisture to keep your feet dry. A firm band encircles the arch and offers great support. The heel and toes are made of nylon for more durability.

  • PrimaLoft® / merino wool blend.
  • Arch-support band.
  • Nylon heel and toe for durability.
  • Reflective stripe on back.
  • 18cm height.

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