Features of Smartwool Women's Run Targeted Cushion Brush Stroke Printed Low Ankle Sock 4 Degree elite Fit system for a dialled-in, Performance-oriented Fit Mesh zones for added breathability Virtually seamless toe for enhanced comfort Women's specific Fit Achilles tab prevents sock from slipping into footwear Height: Low ankle Targeted cushion Fabric Details 47% Merino Wool 12% Nylon 33% Recycled Nylon 4% Elastane 4% Polyester 47% Merino Wool 12% Nylon 33% Recycled Nylon 4% Elastane 4% Polyester