Castelli Men's Transition 18 Socks (Pro Red) (S/M)

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The Castelli Transition 18 Socks feature a thinner construction than other cold weather socks taking up less space in the shoe helping to create that perfect fit. A Merino/wool/silk blend maintain protection against the cold.


  • Merino wool silk
  • Thinner construction like a summer sock so that it doesn't take up as much space in the shoe

Season: Cool Weather
Cuff Height: 6 - 8"
Material: Wool/Merino
Visibility: -
Color: Red

Sizing Note: Castelli socks run smaller than most. Double-check the Size Chart to verify your size.

This product was added to our catalog on October 21, 2020

Men's US Shoe SizeEuro Shoe Size
S/M5 - 6.536 - 39
L/XL7 - 1040 - 43
2XL10.5 - 1344 - 47

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.