DARN TOUGH. 1975 CHARCOAL. PINNACLE MICRO CREW LIGHT CUSHION. CHARCOAL. We re always searching for the next best sock which brings us to the Pinnacle--a fresh addition to the lightweight hiking sock lineup. It boasts a sleek cuff that slides on smooth along with the trail-rated toughness and naturally stink-proof quick-drying Merino wool performance you expect from us.