Lucky, lucky you! A three pack of Smartwool knee high socks packaged exclusively for you and available only at Eastern Mountain Sports. Enjoy. Made from a blend of soft New Zealand merino wool, nylon, and elastane. SmartWool delivers soft, itch free comfort, even foot temperature, moisture management, and odor control. Knee high construction. Trio includes. Trellis with micro cushion 79% merino wool, 20% nylon, 1% elastane WOW wool on wool Technology more wool in high impact and high wear areas to reduce shock and abrasion. High Isle with no cushion 77% merino wool, 22% nylon, 1% elastane supportive arch brace. Mountain Floral with cushion 73% merino wool, 25% nylon, 2% elastane supportive arch brace. Machine wash warm tumble dry low.