Womens PhD® Outdoor Light Pattern Crew Desert Purple - Small. Experience durability at its peak with the PhD® Outdoor Light Crew. Featuring Indestructawool⢠technology, a patent-pending wool-based durability construction, these socks are ready for any adventure on your list. Plus, with redesigned mesh zones, a Virtually Seamless® toe and the 4 Degree® elite fit system, these socks have comfort covered. The women's-specific fit provides an overall slimmer fit and narrower heel.