The cushioning on the entire Performance Hike Full Cushion Crew sock provides added protection and warmth for those chillier hikes. This year's sock offers Indestructawool technology with extended durability zones for a stronger, longer-lasting sock. Add in the smoothed-out toe seams that enhance in-shoe fit and comfort, and you know your trek will be more enjoyable than ever. So get out and get moving on those trails!