Offering cushioned comfort the smartwool mens phd outdoor medium crew socks are dedicated to lasting comfort made with indestructawool technology the socks are highly durable with high stretch capabilities for an increased range of movement vented zones allow for increased breathability with plush underfoot cushioning for longer days on the hillactivitycasual walking hikingcolour swatchblackcushioningcushioned heel cushioned toesgendermensperformancebreathablebrandsmartwoolcolo