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Wore these on a 28-degree morning run and my toes stayed warm the whole six miles. The targeted cushioning under the ball of the foot is noticeable without making the sock feel bulky in my shoes.

Merino wool really earns its keep here—my feet stayed toasty through a 10-miler in 40-degree wind without any clamminess. The targeted cushioning under the heel and ball feels just right, not bulky, and the crew height keeps my ankles covered. These have become my go-to for every chilly morning run.

Wore these on a freezing dawn run and my feet stayed warm the whole way, which honestly surprised me. The merino wool blend breathes just enough that I didn't end up with sweaty socks by mile three. Crew height hits right above the ankle bone and the fabric has a snug, dialed feel that doesn't bunch