Ascent Socks Warm Weather (21° - 40°C) The Summit Aero Jersey is

The Summit Aero Jersey is constructed from ultra-light

fleece backed skull cap has been designed to keep your forehead and ears toasty warm while providing full

Whether you’re tackling cool Spring mornings

and next-to-skin comfort

but this jersey also features active-cooling from 37

Ascent Socks Warm Weather (21° - 40°C) The Summit Aero Jersey isThe Ascent Sock with the 5" cuff 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 Ascent is a sock that every cyclist will want to have along for the ride.