Darn Tough Women's Stride Micro Crew Ultralightweight Size:M UD is the abbreviation to

UD is the abbreviation to describe the “uni” or one-directional arrangement of the fibers

8 inch length (up to iPhone 8+ Plus and Samsung Galaxy 9+ plus)

Hubs Giant eTracker

• 250 lumen Daylight Visible tail light with Laser Lanes

and modest sodium levels

Darn Tough Women's Stride Micro Crew Ultralightweight Size:M UD is the abbreviation toPound the ground and put in the miles. It's never easy, but at least it's comfortable with the ultra lightweight Stride running sock. Extra durability was knit into the heel, footbed and at the first and fifth metatarsal (outside toes). This micro crew sock features smooth, anti chafe Merino Wool, with cooling mesh and a low profile, next to skin fit that will match any hundo you throw its way.