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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.