Cannondale Men's Seamless Arm Warmer by Defeet 60% nylon/39% CoolMax Eco Made/1% Lycra Made in US Arm skins from Defeat are made with Coloma Eco Made to cover a wide range of temperatures The Stay fast cuff and secure binding hold the warmers securely in place 60% Nylon, 39% Coloma Eco Made, 1% Lycra