The Castelli Free 9 Sock is to regular socks as space shuttles are to balsa-wood gliders--the basic design is similar, but everything that matters is totally different. The Free 9 is woven from Meryl Skinlife fibers, which are engineered to be antimicrobial, highly breathable, and moisture wicking, so your feet stay fresh, dry, and comfortable. A high-density woven band under the arch supports your foot and prevents slippage without adding any extra thickness, a flat toe seam prevents irritation, and an open mesh panel at the cuff increases airflow to provide unbeatable ventilation.
Options, sizes, colors available on Backcountry
Manufactured by Castelli
Castelli Free 9 Sock ships and sold by Backcountry
Price subject to change
*Shipping and Returns: Some exclusions apply, see cart on Backcountry for details
US-Parks.com has partnered with Backcountry to offer the best outdoor gear for your outdoors adventure
Currently Viewing Castelli Free 9 SockMore by Castelli
The bighorn sheep is the mammalian symbol of Colorado Parks and Wildlife and Colorado's official animal. Colorado is home to the largest population of the species anywhere. The animals are five to six feet long with a tail three to six inches in length.