The FITS Original Fit Ultra Light Cushion No Show Running Sock ($19) earns its spot as the best no-show running sock thanks to its breathable design, secure fit, and low-profile comfort. Tested by Staff writer Heather Balogh Rochfort over 17 miles of running and another 10 miles of hiking in Colorado’s Roaring Fork Valley, the sock stayed put without slipping or bunching, which is a common issue with no-show cuts. Even in the desert heat outside Fruita, Colorado, the lightweight fabric and mesh construction kept feet cool and comfortable with nary a blister to be found.

The sock’s light compression hugs the foot just enough to feel secure. Think: cozy, not restrictive. There is a fair bit of merino wool woven into the material and these fibers manage sweat and odor far better than any synthetic sock we’ve tested. Cushioning is minimal but sufficient for long runs. You won’t feel like you’re running on a pillow but there is enough to keep most runners happy.

The one caveat is a horizontal seam that runs across the toes. Depending on foot shape and toe length, it sits in an odd spot. For Balogh Rochfort, it crossed just above her two outer toes, awkwardly separating them from the other three. But once she began running, the sensation disappeared and she never noticed it again.