The Fox Flexair Women\'s 6 inch Merino Sock is a lightweight, breathable merino wool sock designed for all-day riding comfort.Fox Flexair Women\'s 6 inch Merino Sock FeaturesMesh zones provide added breathability?Compression arch support for superior fit and comfort?Rib knit upper won’t slide down when the trail gets rough?Flat-stitch toe construction offers improved comfort?Fox Flexair Women\'s 6 inch Merino Sock Materials59% Merino Wool/25% Polyamide Nylon/12% Polyester/4% Elastane