Sealskinz mtb mid mid socks w hydrostopsealskinzs mountain bike mid socks are high performance lightweight waterproof socks that feature hydrostop silicone these socks have been specifically designed for mountain biking in conditions where minimal insulation and maximum breathability are required featuresmid weight mid length sock offering a perfect balance of warmth and breathabilityconstructed with our proprietary stretch dry waterproof breathable and wind proof technologyhydrostop sili