Smartwool PhD Slopestyle Light Switch Alley Oop Socks. Power through a mixed bag of mountain conditions in style with the PhD Slopestyle Light Switch Alley Oop. Featuring Smartwool's 4 DegreeTM elite fit system, ReliaWoolTM technology, flat knit toe seams, and all the benefits of Merino to help keep you warm and dry. Light cushioning.
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