Castelli Primaloft 15 Socks - Men's 6003-729
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Castelli Primaloft 15 Socks - Men's

Size Guide

Rocksolid Guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, undergarments and swimwear excluded).

Swimwear and undergarments are only returnable if unworn with original tags attached. But if something’s not up to snuff or damaged upon delivery, you can bring it back.

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Price match guarantee

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If you see a lower price for this exact item advertised online, in print or in a store, give us a call at 1 (888) 847-0770.

If it’s identical, brand-new, in stock, and sold and shipped by a Canadian-based retailer, we’ll match that price.

See available Bike socks


Show Description

Super-warm socks for muddy bouts of cyclocross or ice-cold century rides.

  • Primaloft synthetic insulation provides total warmth and moisture management.
  • Mid-calf design with reinforced toe and heel areas.
  • Terry construction adds softness and warmth.
  • 15cm length.

Tech specs

Show Tech specs
Ideal for
  • Road cycling
  • Cyclocross
Fabric content
  • 50% polyester
  • 25% spandex
  • 15% nylon
  • 10% polypropylene
Thickness Medium
Cuff height Mid-calf

Layers of cushioning, in some athletic socks, are knit in to reduce impact. Mapped socks are activity-specific and will offer cushioning in common pressure areas.

Anatomical fit

Left foot and right foot specific socks provide precise fit.

Made in Italy