Look as good underneath your slacks as you do on the outside with the Fox River® Trouser Lightweight Merino casual sock. ; Soft Merino wool comforts feet while keeping them warm. ; Performance URFitTM system provides a personal fit. ; Memory-knit construction holds form, wash after wash. ; Contoured rib top holds sock in place to eliminate slippage. ; Spandex compression zones add support and keep sock in place all day long. ; Fully cushioned sole absorbs shocks and insulates. ; Reinforced toe and heel add comfort and longer product life. ; 76% Merino wool, 22% nylon, 2% spandex. ; Machine wash inside out in warm water, tumble dry low. ; Temperature : Moderate/Warm Weather. ; Weight : Light weight. ; Height : Crew.