The Perfect Fit Boot Sock combines cushion footbed features with performance technology for ultimate comfort. The close-fitting padded arch and all-over mild compression provides the perfect fit even on the longest of days. FEATURES 73% Nylon/ 12% Polyester/ 10% Cotton/ 5% Lycra Opti-Dry moisture wicking yarns with anti-odor Padding under foot with mild compression throughout Venting panel at top of foot Perfect fit and feel SIZE & FIT One size fits Women's 6-13, Men's 5-12 without losing its shape or stretch