[Available in Mid-February 2008] The arch-support system on our Pro Sock means less fatigue through the feet and a better workout. Stretchy, resilient fabric feels great and a Nylon-reinforced heel and toe endure miles of hard cycling. - Two layer fitted cuff - New arch support system - Great stretch throughout - Stealth toe box - Nylon reinforced heal and toe - Mesh Upper - Acrylic, nylon, elastic For complete product details, including a sizing chart, please visit http://www.aerotechdesigns.com/sockpage.htm#dprosock Availability: Usually ships the next business day. 19022$6.00Size: SML Thank you for your interest in our cyclewear! We ship all orders ASAP email: cyclewear@aerotechdesigns.com Website: http://www.aerotechdesigns.com