Smartwool's ultra light cushioned PhD Running Ultra Light Micro is the perfect running sock for mild weather and shorter distances. Thanks to WOW technology in high density impact zones, shock and abrasion are reduced. The 4-Degree Fit System also keeps the sock in place. Made in the USA of New Zealand Zque™ Merino wool.
New 4 Degree Elite Fit System uses two elastics for greater stretch and recovery to keep the sock in place
Patent pending ReliaWool Technology in high impact areas provides the longer lasting protection to keep feet comfortable Low profile and durable virtually seamless toe