Description A favorite of through-hikers and day-trippers alike, the PhD® Outdoor Light packs some serious trail power. Featuring a versatile, multi-sport design, this lightweight style includes Indestructawool™ technology for ultimate durability in high wear areas. And when it comes to comfort, we pulled out all the stops: the 4 Degree™ elite fit system provides a dialed fit and our signature Virtually Seamless™ toe offers extraordinary comfort in any trail shoe. The mid crew silhouette sits at an ideal height for a low trail boot while the women’s-specific fit provides an overall slimmer fit and narrower heel. Features Indestructawool™ technology for enhanced durability 4 Degree™ elite fit system for a dialed, performance-oriented fit Body-mapped mesh zones for added breathability Virtually Seamless™ toe for enhanced comfort Women's specific fit; narrower heel and slimmer fit 5.5" overall height 57% Merino Wool, 40% Nylon, 3% Elastane Style: SW001309 Benefits 4 Degree™ Elite Fit System For a dialed, performance-oriented fit with flex zone at ankle joint Indestructawool™ Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort Light Cushion Light cushioned sole for added warmth with minimal volume PhD® Built for Performance in the Highest Degree Care Machine wash warm, wash inside out. Do not bleach. Tumble dry low. Do not iron. Do not dry clean.