On Sale. Smartwool Women's PhD Outdoor Ultra Light Mini Sock DECENT FEATURES of the Smartwool Women's PhD Outdoor Ultra Light Mini Sock 4-Degree Fit System for all day performance fit WOW Technology in high density impact zones to reduce shock and abrasion Strategic mesh zones for maximum ventilation The SPECS Height: Mini Cushioning: Ultra light cushion Fabric: 68% Merino Wool, 30% Nylon, 2% Elastane