OVERVIEW: The fully customised Ascent Sock with the optional 18CM/7.1″  length of hight cuff to choose from is our top-of-the-line and lightest “thin” sock and features Repreve® Sorbtek® fiber. Made from recycled water bottles, Repreve® Sorbtek® fiber wicks and breathes exceptionally well. Other features include an imperceptible, no-feel toe seam and 360 degree Aireator® mesh weave venting. The Summit is a sock that every cyclist will want to have along for the ride.